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8/9/2007 - 1 -
AW-GH320
IEEE 802.11 b/g Wireless LAN Module IC
For Mobile Phones, DSCs, PMPs and Gaming Devices
Datasheet
Version 1.3
Document release Date Modification Initials Approved
Version 0.6 2006/11/8
1. Add some pin description of the pin 33 and 39 at P13 2. Add note about the reflow temperature at P25 3. Change module high to 1.4mm
Ivan Chen CE Huang
Version 0.7 2006/11/22 1.Improve the customer product yield AW-GH320 Top View PCB Layout at p24 2. Modify operating Temperature
Ivan Chen CE Huang
Version 0.8 2006/12/26 1.Imporve Rx Sensitivity 2. Some system VIO_X2 use 3.3V stable than 1.8V
Ivan Chen CE Huang
Version0.9 2007/2/23 Ervise Top View PCB Layout footprint at P24 Ivan Chen CE Huang
Version1.0 2007/04/23 1.Add Reliability test and Certification test 2.Modified reflow profile time
Ivan Chen CE Huang
Version1.1 2007/05/31 Modify the pad size to improve the customer’s SMT yield Ivan Chen CE Huang
Version1.2 2007/06/25 Modify Power manager define and add SMT preparation Ivan Chen CE Huang
Version1.3 2007/08/09 1.Add Japan ch14 target power 2. Update operating temperature Ivan Chen CE Huang
8/9/2007 - 2 -
1. General Description 1-1. Product Overview and Functional Description AzureWave Technologies, Inc. introduces the first IEEE 802.11b/g WLAN module IC---AW-GH320.
The module IC is targeted to mobile devices including Mobile Phones, Digital Still Cameras (DSCs), Portable Media Players (PMPs), Personal Digital Assistants (PDAs), and Gaming Devices which
need small footprint package, low power consumption, multiple interfaces and OS support. By using AW-
GH320, the customers can easily enable the Wi-Fi embedded applications with the benefits of high
design flexibility, short development cycle, and quick time-to-market.
Compliance with the IEEE 802.11b/g standard, the AW-GH320 uses Direct Sequence Spread Spectrum
(DSSS), Orthogonal Frequency Division Multiplexing (OFDM), DBPSK, DQPSK, CCK and QAM
baseband modulation technologies. A high level of integration and full implementation of the power
management functions specified in the IEEE 802.11 standard minimize the system power requirements
by using AW-GH320. In addition to the support of WPA/WPA2 and WEP 64-bit and 128-bit encryption,
the AW-GH320 also supports the IEEE 802.11i security standard through the implementation of AES-CCMP. The support of QoS also enables the AW-GH320 for the use of video, voice and multimedia
applications.
The AW-GH320 provides host interfaces SDIO and G-SPI which is suitable for multiple mobile
processors for different applications. With the support of Bluetooth co-existence and cellular phone co-existence, the AW-GH320 is also the best solution for mobile phones and PDA phones applications.
AW-GH320 module adopts Marvell’s latest highly-integrated WLAN SoC---88W8686. All the other
components are implemented by all means to reach the mechanical specification required. AW-GH320
uses surface mount technologies (SMT) that solder join and soldering strength provide mounting
mechanism to secure the AW-GH320 module against vibration and shock on the host system.
1-2. Key Features
Small footprint: 9.6mm(L) x 9.6mm(W) x 1.3 mm(H) SDIO, G-SPI interfaces support Bluetooth and Cellular phone co-existence support Multiple power saving modes for low power consumption IEEE 802.11i for advanced security Quality of Service (QoS) support for multimedia applications Multi OS support including WinCE, Linux, u-Itron, ThreadX Lead-free design
8/9/2007 - 3 -
A simplified block diagram of the AW-GH320 module is depicted in the figure below.
AzureWave AW-GH320
BT_Coexistance
POR and Software Configuration 2.4 GHz
ANTENNA
SDIO/GSPI Interface
POWER SUPPLIES
OSC
88W8686
EEPROM
2.4 GHz SPDT
2.4 GHz BPF
2.4 GHz PA
2.4 GHz RX
2.4 GHz TX
2.4 GHz Balun
WLAN (802.11 b/g)
8/9/2007 - 4 -
1-3. Specifications Table Model Name AW-GH320
Product Description Wireless LAN Module IC
WLAN Standard IEEE 802.11b/g, Wi-Fi compliant
Host Interface SDIO/G-SPI
Operating Conditions
Voltage 3V /1.8V/(1.2V)+/- 10%
Temperature Operating: -40 ~ 85oC
Humidity 15% ~ 95%
Dimension 9.6mm x 9.6mm x 1.3mm
Package LGA
Weight Less than 10 grams
Electrical Specifications
Frequency Range 2.4 GHz ISM radio band
Number of Channels
802.11b: USA, Canada and Taiwan – 11 Most European Countries – 13 France – 4, Japan – 14 802.11g: USA and Canada – 11 Most European Countries – 13
Modulation DSSS, OFDM, DBPSK, DQPSK, CCK, 16-QAM, 64-QAM
Output Power
802.11b(Ch1~13): typical 15dBm +/- 1.5dBm 802.11b(Ch14): typical 10dBm +/- 1.5dBm 802.11g: typical 12dBm +/- 1.5dBm
Antenna One RF port on pad
Receive Sensitivity 802.11b: typical -86dBm at 11Mbps 802.11g: typical -71dBm at 54Mbps
Medium Access Protocol CSMA/CA with ACK
Data Rates 802.11b: 1, 2, 5.5, 11Mbps 802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps
Power Consumption
TX g mode 54MHz: 197.39mA(CW mode) b mode 11MHz:220.39mA(CW mode) RX g mode:170.12 mA b mode:148.78 mA Deep Sleep Mode:0.42mA
Operating Range Open Space: ~300m ; Indoor: ~100m (The transmission speed may vary according to the environment)
Security
WEP 64-bit and 128-bit encryption with H/W TKIP processing WPA/WPA2 (Wi-Fi Protected Access) AES-CCMP hardware implementation as part of 802.11i security
standard
Operating System Compatibility Win CE 4.2/.NET, Win CE 5.0, Linux, Pocket PC 2004/2005
8/9/2007 - 5 -
Co-Existence Bluetooth and cell phone(GSM/DCS/WCDMA/UMTS/3G) co-existence
Reliability Test ESD-MM:JEDEC EIA/JESD22-A115-A Class 1 ESD-HBM:MIL-STD-883F Method 3015.7 Class 1
Certification Pre-CE/ pre-FCC/pre-SRMC
2. Electrical Characteristics 2-1. Absolute Maximum Ratings
Symbol Parameter Condition Min Typ Max Units 3V_PA PA power supply 3.0 4.6 V
3V_IO Digital I/O power supply 3.0 4.6 V
1.8 2.3 VIO_X1 Host I/O power supply
3.3 4.2 V
1.8 2.3 VIO_X2 Digital power supply
3.3 4.2 V
VDD18_X3 Internal voltage power supply 1.8 2.3 V
VDD18A Analog I/O power supply 1.8 2.3 V
1.2_EXT Digital power supply 1.2 1.35 V
2-2. Recommended Operating Conditions
Symbol Parameter Condition Min Typ Max Units 3V_PA PA power supply 2.7 3 3.3 V
3V_IO Digital I/O power supply 2.7 3 3.3 V
1.62 1.8 1.98 VIO_X1 Host I/O power supply
2.97 3.3 3.63 V
1.62 1.8 1.98 VIO_X2 Digital power supply
2.97 3.3 3.63 V
VDD18_X3 Internal voltage power supply 1.62 1.8 1.98 V
VDD18A Analog I/O power supply 1.7 1.8 1.9 V
1.2_EXT Digital power supply 1.08 1.2 1.32 V
8/9/2007 - 6 -
2-3. Serial Interface Specification 2-3-1. DC Electricals- 1.8V/3.3V(VIO_X1/VIO_X2)
Symbol Parameter Operating
Mode Condition Min Typ Max Units
V18 Power supply voltage 1.8V 1.62 1.8 1.98 V
V33 Power supply voltage 3.3V 2.97 3.3 3.63 V
1.8V 1.2 V18+0.3 V VIH Input high voltage
3.3V 2 V33+0.3 V
1.8V -0.3 0.6 V VIL Input low voltage
3.3V -0.3 1V V
1.8V 1.22 V VOH Output high voltage
3.3V 2.57 V
1.8V 0.4 V VOL Output low voltage
3.3V 0.4 V
[email protected] Output high current 1.8V SR[1:0]=3 7. 12 16 mA
[email protected] Output low current 1.8V SR[1:0]=3 8 16.5 23 mA
[email protected] Switch high current 1.8V SR[1:0]=3 10 16 22 mA
[email protected] Switch low current 1.8V SR[1:0]=3 10 22 32 mA
[email protected] Output high current 3.3V SR[1:0]=3 9.5 13.5 16.5 mA
[email protected] Output low current 3.3V SR[1:0]=3 10 18 23.5 mA
[email protected] Switch high current 3.3V SR[1:0]=3 13 18.5 23 mA
[email protected] Switch low current 3.3V SR[1:0]=3 13.5 24.5 33 mA
I_pullup 15.7 21.7 28.7 uA
I_pulldown 11.8 22.5 33.1 uA
I_pullup_weak 2.1 2.4 3.4 uA
I_pulldown_weak 1.3 3 4.9 uA
8/9/2007 - 7 -
AC Electricals- 1.8V/3.3V(VIO_X1/VIO_X2)
Symbol Parameter Operating
Mode Condition Min Typ Max Units
1.8V 0.2*V18-
0.8*V18 0.58 1.05 1.65 V/ns TSLEW_RISE
@10pF
Load
Output rise slew rate
when SR1[1:0]=3 3.3V
0.2*V33-
0.8*V33 0.81 1.39 2.08 V/ns
1.8V 0.8*V18-
0.2*V18 0.6 1.34 2.38 V/ns TSLEW_FALL
@10pF
Load
Output fall slew rate
when SR1[1:0]=3 3.3V
0.8*V33-
0.2*V33 0.73 1.49 2.21 V/ns
1.8V 0.2*V18-
0.8*V18 0.58 1.05 1.65 V/ns TSLEW_RISE
@10pF
Load
Output rise slew rate
when SR1[1:0]=2 3.3V
0.2*V33-
0.8*V33 0.81 1.39 2.08 V/ns
1.8V 0.8*V18-
0.2*V18 0.4 0.88 1.38 V/ns TSLEW_FALL
@10pF
Load
Output fall slew rate
when SR1[1:0]=2 3.3V
0.8*V33-
0.2*V33 0.64 1.29 1.86 V/ns
1.8V 0.2*V18-
0.8*V18 0.19 0.34 0.5 V/ns TSLEW_RISE
@10pF
Load
Output rise slew rate
when SR1[1:0]=1 3.3V
0.2*V33-
0.8*V33 0.38 0.59 0.82 V/ns
1.8V 0.8*V18-
0.2*V18 0.2 0.45 0.68 V/ns TSLEW_FALL
@10pF
Load
Output fall slew rate
when SR1[1:0]=1 3.3V
0.8*V33-
0.2*V33 0.36 0.7 0.89 V/ns
1.8V 0.2*V18-
0.8*V18 0.19 0.34 0.5 V/ns TSLEW_RISE
@10pF
Load
Output rise slew rate
when SR1[1:0]=0 3.3V
0.2*V33-
0.8*V33 0.38 0.59 0.82 V/ns
1.8V 0.8*V18-
0.2*V18 0.2 0.45 0.68 V/ns TSLEW_FALL
@10pF
Load
Output fall slew rate
when SR1[1:0]=0 3.3V
0.8*V33-
0.2*V33 0.36 0.7 0.89 V/ns
8/9/2007 - 8 -
2-3-2. DC Electricals-3V pads(3V_IO) Symbol Parameter Condition Min Typ Max Units
V30 Power supply voltage 2.7 3.0 3.3 V
VIH Input high voltage 1.0 1.2 V
VIL Input low voltage 0.6 0.8 V
VHYS Input hysteresis 250 mV
VOH Output high voltage 2.3 V
VOL Output low voltage 0.4 V
[email protected] Output high current 4.5 9.5 13.5 mA
[email protected] Output low current 4.5 9 12 mA
[email protected] Switching current high 5.5 14 20 mA
[email protected] Switching current low 5.5 12.5 18 mA
AC Electricals-3V pads(3V_IO)
Symbol Parameter Condition Min Typ Max UnitsTSLEW_RISE@10pF
Load Output rise slew rate 0.2*V30-0.8*V30 0.31 0.63 1.16 V/ns
TSLEW_FALL@10pF
Load Output fall slew rate 0.8*V30-0.2*V30 0.35 0.68 1.02 V/ns
2-4. Input Clock Specifications AW-GH320 requires external reference clock source. The frequency can be 19.2, 20, 26, 38.4(default),
40 MHz. The selection of reference clock is configurable based on boot strip setting.
26 MHz Clock Timing Note: Over full range of values specified in the Recommended operating conditions unless otherwise
specified
Symbol Parameter Condition Min Typical Max Units TP_xo26 XO26 period 38.462-20ppm 38.462 38.462+20ppm ns
TH_xo26 XO26 high time 15.3848 19.231 23.0772 ns
TL_xo26 XO26 low time 15.3848 19.231 23.0772 ns
TR_xo26 XO26 rise time 5 ns
TF_xo26 XO26 fall time 5 ns
8/9/2007 - 9 -
38.4 MHz Clock Timing Note: Over full range of values specified in the Recommended operating conditions unless otherwise
specified
Symbol Parameter Condition Min Typical Max Units TP_xo38.4 XO38.4 period 26.042-20ppm 26.042 26.042+20ppm ns
TH_xo38.4 XO38.4 high time 10.4168 13.021 15.6252 ns
TL_xo38.4 XO38.4 low time 10.4168 13.021 15.6252 ns
TR_xo38.4 XO38.4 rise time 5 Ns
TF_xo38.4 XO38.4 fall time 5 ns
40 MHz Clock Timing Note: Over full range of values specified in the Recommended operating conditions unless otherwise
specified
Symbol Parameter Condition Min Typical Max Units TP_xo40 XO40 period 25-20ppm 25 25+20ppm ns
TH_xo40 XO40 high time 10 12.5 15 ns
TL_xo40 XO40 low time 10 12.5 15 ns
TR_xo40 XO40 rise time 5 Ns
TF_xo40 XO40 fall time 5 ns
8/9/2007 - 10 -
2-5. G-SPI Host Interface Protocol Timing Referred from Marvell hardware specifications
Symbol Parameter Condition Min Typ Max UnitsT1 Clock Period 20
T2 Clock high 5
T3 Clock Low 9
T4 Clock Rise Time 1
T5 Clock Fall Time 1
T6 SDI Hold Time 2.5
T7 SDI Setup Time 2.5
T8 SDO Hold Time 5
T9 SDO Setup Time 1
T10 SCSn Fall to Clock 5
T11 Clock to SCSn Rise
0
T12 SCSn Rise to SCSn Fall 400
ns
8/9/2007 - 11 -
2-6. SDIO Host Interface Protocol Timing Referred from Marvell hardware specifications
Over full range of values specified in the recommended operating conditions unless otherwise specified.
Symbol Parameter Condition Min Typ Max Unitsfpp CLK Frequency 0 45 MHz
TWH CLK High Time 11.1
TWL CLK Low Time 11.1
TISU Input Setup Time 5
TIH Input Hold Time 5
TODLY Output Delay Time
0 15
ns
2-7. Pin Out Power Supply Use VIO_X1 Supply 3V_IO VDD18_X3
PDn/RESTn ANT_SEL_N BT_STATE EX_OSC_C ANT_SEL_P WLAN_ACTIVE
WLAN MAC_WAKE BT_PRIORITY LED out
SD_DAT[1]/SPI_SDOn SD_DAT[3]
SD_DAT[2]/SPI_SINTn SD_DAT[0]/SPI_SCSn
SD_CMD/SPI_SDI SD_CLK/SPI_CLK
8/9/2007 - 12 -
3. Module Current Consumption AW-GH320 provides customers different good power control to save the power of mobile devices.
Power Down mode :PDn is asserted. Only I/O ring is powered. CPU, Memory, MAC/BB,RF are off.
Not associated
Deep Sleep mode CPU and memory run on slow clock. MAC/BB/RF are turned off. Associated
AW-GH320 power configurations:
(3.3V I/O),TX b mode power=15dBm, g mode power 10dBm,External Oscillator(26MHz),1.2V internal
voltage regulator.
If the mobile devices supply VIO_X1 only when using power down mode, the current consumption will be
the lowest.
Current consumption table as below
Deep Sleep Mode
TX 54Mb/s(CW Mode)
TX11Mb/s (CW Mode)
Rx G mode
RX B mode
Total current(mA)
0.42 197.39 220.39 170.12 148.78
Configuration Total
poer(mW) 0.97 463.67 539.54 325.64 288.46
8/9/2007 - 13 -
4. Pin Definition 4-1. Pin Assignment
Pin No Definition Basic Description Type 1 GND
2 RF IN/OUT RF port for antenna or RF connector 50Ohm @2.4GHz
3 GND
4 GND
5 TRSTn JTEG pin (internal use) No connection
6 GPIO2 JTAG mode enabled pin (internal use) No connection
7 EX_OSC_C External oscillator control I/O
8 TMS_ARM JTEG pin (internal use) No connection
9 3V_PA 3V PA power supply P
10 WLAN MAC_Wake WLAN MAC wake-up in /Interrupt in Software uses this pin or though SDIO as a method of getting the device out of deep sleep.
I/O
11 LED out Transmit power or receive ready LED.
12 GND
13 SD_DAT[1]/ SPI_SDOn
SDIO 4-bit Mode: Data line bit[1] SDIO 1-bit Mode: Interrupt SDIO SPI Mode: Reserved G-SPI Mode: G-SPI Data Output(active low)
I/O Note2
14 SD_DAT[3] SDIO 4-bit Mode: Data line bit[3] SDIO 1-bit Mode: Reserved SDIO SPI Mode: Card Select(active low)
I/O Note2
15 OSC select(1) OSC Frequency Select: Note1
16 BT_STATE
Bluetooth State 0= normal priority, RX 1=high priority, Tx Priority is signaled after BT_PRIORITY has been asserted. After priority signaling, BT_STATE indicates the Tx/Rx mode of BT radio.
I
17 WLAN_ACTIVE
WLAN Active(active low) 2-Wire BCA Mode: When high,WLAN is transmitting or receiving packets. 3-Wire BCA Mode: 0=Bluetooth(BT) device allowed to transmit 1=Bluetooth device not allowed to transmit Internal pull-down. In WLAN Sleep mode ,all I/O PADs are powered down.This Pad must stay at a low state even in power down mode.
O
18 NC
19 3V_IO 3V digital I/O power supply P
20 EXT_REF_CLK External clock source 19.2, 20, 26, 38.4, 40 MHz I/O
21 BT_PRIORITY
Bluetooth Priority 2-Wire BCA Mode: When high,BT is transmitting or receiving high priority packets. 3-Wire BCA Mode: When high,BT is transmitting or receiving packets.
I
22 SLEEP_CLK
Clock input for external sleep clock Note: SLEEP_CLK is used by the WLAN MAC. The input clock frequency is typically 32kHz/32.768kHz/3.2kHz.The Bluetooth radio chip supply is 3.2kH.The WLAN requires 32kHz.
I
23 OSC select(2) OSC Frequency Select Note1
24 GND
25 SD_DAT[2]/ SPI_SINTn
SDIO4-bit Mode: Data line bit[2]or Read Wait(optional) SDIO 1-bit Mode: Read Wait(optional) SDIO SPI Mode: Reserved G-SPI Mode: Active G-SPI Interrupt Output(active low)
I/O Note2
8/9/2007 - 14 -
Pin No Definition Basic Description Type
26 SD_DAT[0]/ SPI_SCSn
SDIO 4-bit Mode: Data line bit[0] SDIO 1-bit Mode:Data line SDIO SPI Mode: Data output G-SPI Mode: G-SPI Chip Select Input(active low)
I Note2
27 SD_CLK/ SPI_CLK
SDIO 4-bit Mode: Clock Input SDIO 1-bit Mode: Clock Input SDIO SPI Mode: Clock Input G-SPI Mode:G-SPI Clock Input
I/O Note2
28 TDI JTEG pin (internal use) No connection
29 SD_CMD/ SPI_SDI
SDIO 4-bit Mode: Command/Response SDIO 1-bit Mode: Command Line SDIO SPI Mode: Data Input G-SPI Mode: G-SPI Data Input
I/O Note2
30 TCK JTEG pin (internal use) No connection
31 ANT_SEL_P
Different Antenna Select Negative out Provides the antenna select negative control signal Default value is 1 ANT_SEL_N ANT_SEL_P Antenna 0 1 Antenna 1 1 0 Antenna 0 Note: Also used as RF switch control for single Bluetooth/WLAN antenna configurations.
O
32 OSC select(0) OSC Frequency Select Note1
33 ECSn SDIO: Series 100Kohm to ground G-SPI: Keep float *
34 SCLK internal use No connection
35 VIO_X2 1.8V/3.3V Digital Power Supply (Some system VIO_X2 use 3.3V stable than 1.8V) P
36 GND
37 VDD18_X3 1.8V digital I/O and internal voltage regulator power supply P
38 VIO_X1 1.8V/3.3V Host Supply P
39 PDn/RESETn
PDn: Internal pull-up Full Power Down(active low as long as system need) 0=full power down mode 1=normal mode Connect to power down pin of host
RESETn: Internal pull-up Reset(active low at least 10ns)
(1)When the customer uses the PDn/RESETn mode, the SDIO/SPI interface must reboot.
(2)When the customer uses SDIO interface, the pin 33 must series 100K ohm to ground.
I
40 1.2_EXT 1.2V digital power supply(could use internal 1.2V LDO) Note: Please parallel 10uF capacitor if use internal LDO. P
41 VDD18A 1.8V analog I/O power supply P
42 1.2V Reg_SEL Ground: Use module internal LDO supply V1.2V Float : PM Chip supply 1.2 V (default in pad)
43 Host Interface Select(1)
44 Host Interface Select(0)
Host Interface Select: Generic SPI: Each pin series 100K ohm to ground SDIO :Each pin float(default in pad)
45 ANT_SEL_N
Different Antenna Select Negative out Provides the antenna select negative control signal Default value is 0 ANT_SEL_N ANT_SEL_P Antenna 0 1 Antenna 1 1 0 Antenna 0 Note: Also used as RF switch control for single Bluetooth/WLAN antenna configurations.
O
46 GND
47 GND
48 GND
49 GND PA Ground
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Note1: Oscillator frequency select define table, 38.4 MHz default in pad Pin No Definition Basic Description Type
23 OSC select(2)
15 OSC select(1)
32 OSC select(0)
OSC Frequency Select: 2 10(OSC select) RRN 26 MHz RNR 19.2MHz NRR 20 MHz NNN 38.4 MHz (default in pad) NNR 40 MHz Note: R mean this pin series 100K ohm to ground. N mean this pin float
Note2:SDIO/G-SPI interface Pin
13 SD_DAT[1]/ SPI_SDOn
SDIO 4-bit Mode: Data line bit[1] SDIO 1-bit Mode: Interrupt SDIO SPI Mode: Reserved G-SPI Mode: G-SPI Data Output(active low)
I/O
14 SD_DAT[3] SDIO 4-bit Mode: Data line bit[3] SDIO 1-bit Mode: Reserved SDIO SPI Mode: Card Select(active low)
I/O
25 SD_DAT[2]/ SPI_SINTn
SDIO4-bit Mode: Data line bit[2]or Read Wait(optional) SDIO 1-bit Mode: Read Wait(optional) SDIO SPI Mode: Reserved G-SPI Mode: Active G-SPI Interrupt Output(active low)
I/O
26 SD_DAT[0]/ SPI_SCSn
SDIO 4-bit Mode: Data line bit[0] SDIO 1-bit Mode:Data line SDIO SPI Mode: Data output G-SPI Mode: G-SPI Chip Select Input(active low)
I
27 SD_CLK/ SPI_CLK
SDIO 4-bit Mode: Clock Input SDIO 1-bit Mode: Clock Input SDIO SPI Mode: Clock Input G-SPI Mode:G-SPI Clock Input
I/O
29 SD_CMD/ SPI_SDI
SDIO 4-bit Mode: Command/Response SDIO 1-bit Mode: Command Line SDIO SPI Mode: Data Input G-SPI Mode: G-SPI Data Input
I/O
Note3:Bluetooth coexistence
16 BT_STATE
Bluetooth State 0= normal priority, RX 1=high priority, Tx Priority is signaled after BT_PRIORITY has been asserted. After priority signaling, BT_STATE indicates the Tx/Rx mode of BT radio.
I
17 WLAN_ACTIVE
WLAN Active(active low) 2-Wire BCA Mode: When high,WLAN is transmitting or receiving packets. 3-Wire BCA Mode: 0=Bluetooth(BT) device allowed to transmit 1=Bluetooth device not allowed to transmit Internal pull-down. In WLAN Sleep mode ,all I/O PADs are powered down.This Pad must stay at a low state even in power down mode.
O
21 BT_PRIORITY
Bluetooth Priority 2-Wire BCA Mode: When high,BT is transmitting or receiving high priority packets. 3-Wire BCA Mode: When high,BT is transmitting or receiving packets.
I
8/9/2007 - 16 -
5. Bluetooth Interface 5-1. Bluetooth Coexistence The AW-GH320 supports coexistence capability with co-located Bluetooth (BT) devices.
There are two Bluetooth Coexistence Arbitration (BCA) units in the AW-GH320:
Marvell 2-Wire Bluetooth Coexistence Arbitration (2WBCA) scheme
Marvell 3-Wire Bluetooth Coexistence Arbitration (3WBCA) scheme
Only one of the Bluetooth coexistence arbitration units can be used at a time. In addition, the AW-GH320
contains a Switch Module (SM) that controls antenna switching for both single antenna and dual antenna
applications.
Bluetooth Top Block Diagram
5-1-1. System Level Configuration Hardware configurability enables the following system-level configuration options:
BT1.1 or BT1.2 AFH
Marvell QoS-aware 2-wire coexistence signaling interface or 3-wire coexistence signaling interface
Single shared antenna or dual antenna
- For single antenna system, single 3-port or dual 2-port T/R switching configuration
- For single antenna system with 3-port T/R switch, 2-bit encoded or 3-bit once-hot switch control
Configurable timing on coexistence signaling interface and switch control interface
Future-proofed firmware programmable and system-configurable QoS classification and
prioritization
8/9/2007 - 17 -
5-1-2. WLAN / Bluetooth Channel Information Exchange Since BT and 802.11g/b WLAN use the same 2.4GHz frequency band, each can cause interference with
the other. The level of interference depends on the respective frequency channel used by BT and WLAN
(other factors can impact interference, like Tx power and Rx sensitivity of the device).
In a system with both BT and WLAN, the common host receivers information about WLAN channel
usage and passes this information to the BT device. For 1.2 BT devices with Adaptive Frequency
Hopping (AFH) enabled, the BT device can block channel usage that overlaps the WLAN channel in use.
When the BT device avoids all channels used by the WLAN, the impact of interference is greatly reduced,
but not completely eliminated. For 1.1 BT devices, the BT device cannot block WLAN channel usage and
an active BCA scheme at the MAC level is required. The BCA scheme can also be used with 1.2 BT
devices to further reduce the impact of interference to a minimum.
5-1-2-1. Dual /Single Antenna Support Both arbitration units support dual and single antenna configuration.
5-1-2-1-1. Dual Antenna Configuration In dual antenna configurations, both WLAN and BT have their own dedicated antennas. In this case, the
BCA allows simultaneous WLAN and BT transactions, resulting in higher WLAN/BT network
performance.
Dual Antenna Configuration
5-1-2-1-2 Single Antenna Configuration In single antenna configurations, both WLAN and BT share one antenna. In this case, the BCA must
ensure that only one device is allowed to use the antenna. A single antenna configuration has an
advantage of lower cost and board space saving, compared to the dual antenna configuration.
The external RF switch (es) for the single antenna need additional control signals for switch control. This
is accomplished by Switch Module (SM) logic in the AW-GH320. Two possible external RF switch
configurations are supported:
8/9/2007 - 18 -
Single Antenna with two 2-way switches.
Single Antenna with one 3-way switch (some 3-way switches which have internal decoders need
only 2-bit control (use only TR_P/N pins); others need 3-bit one-hot control).
Single Antenna with Two, 2-Way Switches
Single Antenna with One, 3-Way Switch
5-1-3. 2-Wire BCA The 2WBCA interface decides which device has primary access to the shared wireless medium
according to the 2WBCA coexistence scheme. The 2WBCA interface makes its decision based on input
signals from the bluetooth device, input signals from the 802.11 MAC device, and MAC register settings.
The inputs signals from the 802.11 and bluetooth device report activity or priority for their respective
devices. The 2WBCA interface module compares any conflicting traffic based on a programmable table
in the MAC registers.
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2WBAC Block Diagram
5-1-3-1. 2-Wire BCA Arbitration Tables The arbitration scheme is as follows:
WLAN high-priority packets have priority over all BT packets. BT high-priority packets have priority
over WLAN low-priority packets.
When the BT priority signal is asserted, the arbiter checks if the WLAN has a Tx or Rx request. If
the WLAN requests during this time, the arbiter makes an arbitration decision based on the arbiter
decision table. Typically, for the BT device, once the arbiter allows it to transmit, the BT does not
stop transmitting until the transmitting packet completes. For this reason, if a higher priority WLAN
request enters while the BT is transmitting, the arbiter allows the BT to complete transmission
before granting access to the WLAN.
For WLAN requests, the arbiter has no WLAN arbitration window, but the arbiter may stop the
WLAN while the WLAN is in the middle of packet transmission. Since there is no WLAN arbitration
window, the WLAN is granted access immediately if there is no BT request at that time. Except for
WLAN high-priority packets, there is no guarantee that WLAN can transmit or receive (for signal
antenna case) the entire packet. The arbiter can stop the WLAN from transmitting or receiving (for
signal antenna case) in the middle of the packet if there is a new BT request, and the new arbiter
decision is in favor of the BT packet. This approach optimizes the performance of BT voice
applications, at the expense of WLAN performance.
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Single Antenna Default Arbitration Table WLAN Tx Request
WLAN Tx Priority
WLAN Rx Request
WLAN Rx Priority
BT Priority Result
0 0 1 0 1 Stop Low Priority WL Rx
High Priority BT OK
0 0 1 1 1 High Priority WL Rx OK Stop High Priority BT
1 0 0 0 1 Stop Low Priority WL Tx
High Priority BT OK
1 1 0 0 1 High Priority WL Tx OK Stop High Priority BT
Two Antenna Default Arbitration Table
WLAN Tx Request
WLAN Tx Priority
WLAN Rx Request
WLAN Rx Priority
BT Priority Result
0 0 1 0 1 Low Priority WL Rx OK
High Priority BT OK
0 0 1 1 1 High Priority WL Rx OK
High Priority BT OK
1 0 0 0 1 Stop Low Priority WL Tx
High Priority BT OK
1 1 0 0 1 High Priority WL Tx OK Stop High Priority BT
5-1-4. 3-Wire BCA The 3WBCA coexistence framework is based on the IEEE 802.15.2 recommended practice Packet
Traffic Arbitration (PTA) and AFH scheme. This section focuses on the detailed implementation of the
BCA logic that resides in the Marvell WLAN MAC block.
3WBCA High-Level Block Diagram
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5-1-4-1. Packet Classification WLAN packet information includes the 6-bit Pkt_Type (apply to either WLAN Tx or Rx packets). The
arbitration unit has two 64-bit programmable masks (WL_Tx_Pri_Mask and WL_Rx_Pri_Mask) to mask
off all the low-priority packet types. The remaining unmasked packet types are considered high-priority
packet types (firmware puts 0 on the WL_Pri_Mask corresponding to the packet type that has low-
priority). By default, only WLAN ACK packet types have a 1 in the mask.
{WL_Tx_Pkt_Type, WL_Tx_Pri_Mask} -> WL_Tx_Pri
{WL_Rx_Pkt_Type, WL_Rx_Pri_Mask} -> WL_Rx_Pri
5-1-4-2. Arbitration The WLAN MAC includes a flexible packet level arbitration scheme between the WLAN and BT. An
arbiter inside the arbitration block decides whether WLAN or BT can transmit.
{WL_Pri, WL_Tx_Rx, BT_Pri, BT_Tx_Rx} -> Arb_Decision
The default Arb_Decision which is geared towards performance optimization for both WLAN an BT,
based on coexistence test result. Arb_Decision is controlled by two sets of 32-bit firmware-
programmable register for flexibility during performance tuning.
Decision made by the arbitration scheme use the following inputs and register controls:
Classification of each type of WLAN packet as high priority or low priority
Recognition of each BT request as a request to transmit or receive high or low priority
Selection of which traffic type has higher priority: high priority WLAN or high priority BT
Selection of which traffic type has low priority: low priority WLAN or low priority BT
5-1-4-2-1. Arbitration Scheme The arbitration scheme is as follows (default behavior shown):
WLAN high-priority packets have priority over all BT packets. BT high-priority packets have priority
over WLAN low-priority packets.
If AFH is enabled in the BT device and sufficient guard-band outside the WLAN operating frequency
is preserved, the BT device uses the OutOfBand (OOB) channel with respect to the WLAN device.
Otherwise, the BT device uses the InBand (IB)and OOB channels with respect to the WLAN device.
Firmware controls the arbiter for BT IB versus OOB by programming the arbitration mode
configuration register.
For the co-located devices running in dual antenna configuration:
- WLAN Tx and BT Tx in OOB situation have little interference impact on each other.
- WLAN Tx and BT Tx in IB situation have a sizable interference impact on each other. Therefore,
the arbiter decision table allows either WLAN or BT Tx, based on their relative packet priorities.
- WLAN Tx and BT Rx (both OOB and IB) have sizable interference impacts on BT Rx. Therefore,
the decision table stops WLAN Tx when BT Rx is prioritized over WLAN Tx.
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- WLAN Rx and BT Tx (both OOB and IB) have sizable interference impacts on WLAN Rx.
Therefore, the decision table stops BT Tx when WLAN Rx is prioritized over BT Tx.
For BT requests, the arbiter has a BT arbitration window of approximately 75μs after assertion of
the signal indicating the start of BT Tx/Rx high-priority packets. During the BT arbitration window,
the arbiter checks if the WLAN has a Tx or Rx request. If the WLAN requests during the arbitration
window, the arbiter makes an arbitration decision based on the arbiter decision table. Typically, for
the BT device, once the arbiter allows it to transmit, the BT does not stop transmitting until the
transmitting packet completes. For signal antenna mode, if a high priority WLAN request enters
while the BT transaction is on going, the arbiter requests the SM to stop BT immediately and allow
the WLAN to use the antenna.
For WLAN requests, the arbiter has no WLAN arbitration window, but the arbiter may stop the
WLAN while the WLAN is in the middle of packet transmission. Since there is no WLAN arbitration
window, the WLAN is granted access immediately if there is no BT request at that time. Except for
WLAN high-priority packets, there is no guarantee that WLAN can transmit or receive the entire
packet (for single antenna case). The arbiter can stop the WLAN from transmitting or receiving (for
single antenna case) in the middle of the packet if there is a new BT request, and the new arbiter
decision is in favor of the BT packet. This approach optimizes the performance of BT voice
application, but at the expense of WLAN performance.
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6. Cell Phone Co-Existence TX Noise Floor AW-GH320 module support good cell phone co-existence characteristically. The cell phone co-existence
can fit in GSM/DCS/WCDMA/UMTS/3G system. Let’s the handset system users can easy to build-up the
WLAN sub-system in handset system. In the module, we reduce the interference between cell phone
and WLAN by reduce the module maximum TX noise floor. We list the module maximum noise flow at
antenna terminal in the follow table.
Standard Down-Link Band Target Tx Noise Floor at WLAN Ant.
GSM850 869-894 -155dBm/Hz GSM900 925-960 -155dBm/Hz DCS1800 1805-1880 -155dBm/Hz PCS1900 1930-1990 -155dBm/Hz W-CDMA 2110-2170 -155dBm/Hz
Note: Assume over the air is 15dB between Cell phone antenna to WLAN antenna.
7. Mechanical Characteristics
The size and thickness of the AW-GH320 LGA package module is listed below:
1.3+/-0.1mm
AzureWave AW-GH320
YYWW@Taiwan XXXXXXXXXX
Molding
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AW-GH320 Top View PCB Layout FootPrint
Unit: mm
Note: AzurWave will provide AW-GH320 Top View FootPrint DXF file and for customer reference.
8/9/2007 - 25 -
8. Reflow Soldering Profile
No Item Temperature(℃) Time(sec) 1 Pre-heat 120℃ ~ 160℃ 90sec~120sec 2 Soldering Time of above 220℃ 40~60sec 3 Peak-Temp 245℃ max
Note:1. N2 atmosphere during reflow (O2<300ppm) 2. Some component can not reflow over 250℃, please be careful for the reflow
temperature. 9. Module IC SMT Preparation 1. Shelf life in sealed bag: 12 months
At<30℃ and <90% relative humidity (RH)
2. Peak package body temperature: 250℃
3. After bag is opened, devices that will be subjected to reflow solder or other high temperature
process must
(A) Mounted within: 24 hours of factory conditions ≦30℃/60% RH.
(B) Stored at ≦10% RH
4. Devices require baking, before mounting, if:
(A) Humidity indicator card is >10%
When read at 23+-5℃
(B) 3A or 3B not met.
5. If baking is required, devices must be baked for 24 hours at 125+-5℃
PS: Due to possible contamination from the environment, please bake the device immediately after opening the package.