apple ibook g4 - disabling onboard ram tutorial
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1512Mb: x4, x8, x16 DDR SDRAM Micron Technology, Inc., reserves the right to change products or specifications without notice.
512Mx4x8x16DDR_B.p65 Rev. B; Pub 4/01 2001, Micron Technology, Inc.
512Mb: x4, x8, x16DDR SDRAM
ADVANCE
PRODUCTS AND SPECIFICATIONS DISCUSSED HEREIN ARE FOR EVALUATION AND REFERENCE PURPOSES ONLY AND ARE
SUBJECT TO CHANGE BY MICRON WITHOUT NOTICE. PRODUCTS ARE ONLY WARRANTED BY MICRON TO MEET MICRONSPRODUCTION DATA SHEET SPECIFICATIONS.
DOUBLE DATA RATE(DDR) SDRAM
MT46V128M4 32 Meg x 4 x 4 banksMT46V64M8 16 Meg x 8 x4 banksMT46V32M16 8 Meg x16 x 4 banksFor the latest data sheet revisions, please refer to the MicronWeb site:www.micron.com/datasheets
PIN ASSIGNMENT (TOP VIEW)
66-Pin TSOP
FEATURES VDD= +2.5V 0.2V, VDDQ = +2.5V 0.2V Bidirectional data strobe (DQS) transmitted/
received with data, i.e., source-synchronous datacapture (x16 has two one per byte)
Internal, pipelined double-data-rate (DDR)architecture; two data accesses per clock cycle
Differential clock inputs (CK and CK#) Commands entered on each positive CK edge DQS edge-aligned with data for READs; center-
aligned with data for WRITEs DLL to align DQ and DQS transitions with CK Four internal banks for concurrent operation Data mask (DM) for masking write data (x16 has
two one per byte) Programmable burst lengths: 2, 4, or 8 x16 has programmable IOL/IOV. Concurrent auto precharge option is supported Auto Refresh and Self Refresh Modes Longer lead TSOP for improved reliability (OCPL) 2.5V I/O (SSTL_2 compatible)
OPTIONS MARKING Configuration
128 Meg x 4 (32 Meg x 4 x 4 banks) 12 8M464 Meg x 8 (16 Meg x 8 x 4 banks) 64M832 Meg x 16 (8 Meg x 16 x 4 banks) 32M16
Plastic Package OCPL66-pin TSOP (standard 22.3mm length) TG(400 mil width, 0.65mm pin pitch)
Timing Cycle Time7.5ns @ CL = 2 (DDR266B)1 -75Z7.5ns @ CL = 2.5 (DDR266B)2 -7510ns @ CL = 2 (DDR200)2 -8
Self RefreshStandard noneLow Power L
NOTE: 1. Supports PC2100 modules with 2-3-3 timing2. Supports PC2100 modules with 2.5-3-3 timing3. Supports PC1600 modules with 2-2-2 timing
128 Meg x 4 64 Meg x 8 32 Meg x 16
Configuration 32 Meg x 4 x 4banks 16 Meg x 8 x 4 banks 8 Meg x 16 x 4 banks
Refresh Count 8K 8K 8K
Row Addressing 8K(A0A12) 8K (A0A12) 8K (A0A12)
Bank Addressing 4(BA0, BA1) 4 (BA0, BA1) 4 (BA0, BA1)
Column Addressing 4K (A0A9, A11, A12) 2K (A0A9, A11) 1K(A0A9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
VSS
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11VSSQ
DQ10
DQ9
VDDQ
DQ8
NC
VSSQ
UDQS
DNU
VREF
VSS
UDM
CK#
CK
CKE
NC
A12
A11
A9
A8
A7
A6
A5
A4
VSS
x16
VDD
DQ0
VDDQ
DQ1
DQ2
VssQ
DQ3
DQ4VDDQ
DQ5
DQ6
VssQ
DQ7
NC
VDDQ
LDQS
NC
VDD
DNU
LDM
WE#
CAS#
RAS#
CS#
NC
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
x16
VSS
DQ7
VSSQ
NC
DQ6
VDDQ
NC
DQ5
VSSQ
NC
DQ4
VDDQ
NC
NC
VSSQ
DQS
DNU
VREF
VSS
DM
CK#
CK
CKE
NC
A12
A11
A9
A8
A7
A6
A5
A4
VSS
x8 x4
VSS
NC
VSSQ
NC
DQ3
VDDQ
NC
NC
VSSQ
NC
DQ2
VDDQ
NC
NC
VSSQ
DQS
DNU
VREF
VSS
DM
CK#
CK
CKE
NC
A12
A11
A9
A8
A7
A6
A5
A4
VSS
VDD
DQ0
VDDQ
NC
DQ1
VSSQ
NC
DQ2VDDQ
NC
DQ3
VSSQ
NC
NC
VDDQ
NC
NC
VDD
DNU
NC
WE#
CAS#
RAS#
CS#
NC
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
x8x4
VDD
NC
VDDQ
NC
DQ0
VSSQ
NC
NCVDDQ
NC
DQ1
VSSQ
NC
NC
VDDQ
NC
NC
VDD
DNU
NC
WE#
CAS#
RAS#
CS#
NC
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
KEY TIMING PARAMETERSSPEED CLOCK RATE DATA-OUT ACCESS DQS-DQ
GRADE CL = 2** CL = 2.5** WINDOW* WINDOW SKEW
-75 133 MHz 133 MHz 2.5ns 0.75ns +0.5ns
-75 100 MHz 133 MHz 2.5ns 0.75ns +0.5ns
-8 100 MHz 125 MHz 3.4ns 0.8ns +0.6ns
*Minimum clock rate @ CL = 2 (-8) and CL = 2.5 (-75)**CL = CAS (Read) Latency
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7512Mb: x4, x8, x16 DDR SDRAM Micron Technology, Inc., reserves the right to change products or specifications without notice.
512Mx4x8x16DDR_B.p65 Rev. B; Pub 4/01 2001, Micron Technology, Inc.
512Mb: x4, x8, x16DDR SDRAM
ADVANCE
PIN DESCRIPTIONS
TSOP PIN NUMBERS SYMBOL TYPE DESCRIPTION
45, 46 CK, CK# Input Clock: CK and CK# are differential clock inputs. All address and
control input signals are sampled on the crossing of the positiveedge of CK and negative edge of CK#. Output data (DQs andDQS) is referenced to the crossings of CK and CK#.
44 CKE Input Clock Enable: CKE HIGH activates and CKE LOW deactivates theinternal clock, input buffers and output drivers. Taking CKE LOWprovides PRECHARGE POWER-DOWN and SELF REFRESHoperations (all banks idle), or ACTIVE POWER-DOWN (rowACTIVE in any bank). CKE is synchronous for POWER-DOWNentry and exit, and for SELF REFRESH entry. CKE is asynchronousfor SELF REFRESH exit and for disabling the outputs. CKE must bemaintained HIGH throughout read and write accesses. Inputbuffers (excluding CK, CK# and CKE) are disabled during POWER-DOWN. Input buffers (excluding CKE) are disabled during SELF
REFRESH. CKE is an SSTL_2 input but will detect an LVCMOSLOW level after VDDis applied.
24 CS# Input Chip Select: CS# enables (registered LOW) and disables (regis-tered HIGH) the command decoder. All commands are maskedwhen CS# is registered HIGH. CS# provides for external bankselection on systems with multiple banks. CS# is considered partof the command code.
23, 22, 21 RAS#,CAS#, Input Command Inputs: RAS#, CAS#, and WE# (along with CS#) define theWE# command being entered.
47 DM Input Input Data Mask: DM is an input mask signal for write data. Input20, 47 LDM, UDM data is masked when DM is sampled HIGH along with that input data
during a WRITE access. DM is sampled on both edges of DQS.
Although DM pins are input-only, the DM loading is designed tomatch that of DQ and DQS pins. For the x16 , LDM is DM for DQ0-DQ7 and UDM is DM for DQ8-DQ15. Pin 20 is a NC on x4 and x8
26, 27 BA0, BA1 Input Bank Address Inputs: BA0 and BA1 define to which bank anACTIVE, READ, WRITE, or PRECHARGE command is being applied.
29-32, 35-40, A0A12 Input Address Inputs: Provide the row address for ACTIVE commands, and28, 41, 42 the column address and auto precharge bit (A10) for READ/WRITE
commands, to select one location out of the memory array in therespective bank. A10 sampled during a PRECHARGE commanddetermines whether the PRECHARGE applies to one bank (A10 LOW,bank selected by BA0, BA1) or all banks (A10 HIGH). The addressinputs also provide the op-code during a MODE REGISTER SETcommand. BA0 and BA1 define which mode register (mode registeror extended mode register) is loaded during the LOAD MODEREGISTER command.
2, 4, 5, 7, 8, 10, 11, 13, DQ015 I/O Data Input/Output: Data bus for x16 (4, 7, 10, 13, 54, 57, 60, and 6354, 56, 57, 59, 60, 62, are NC for x8), (2, 4, 7, 8,10, 13, 54, 57, 59, 60, 63, and 65 for x4).
63, 65
(continued on next page)
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8512Mb: x4, x8, x16 DDR SDRAM Micron Technology, Inc., reserves the right to change products or specifications without notice.
512Mx4x8x16DDR_B.p65 Rev. B; Pub 4/01 2001, Micron Technology, Inc.
512Mb: x4, x8, x16DDR SDRAM
ADVANCE
PIN DESCRIPTIONS (continued)
TSOP PIN NUMBERS SYMBOL TYPE DESCRIPTION
RESERVED NC PINS1
TSOP PIN NUMBERS SYMBOL TYPE DESCRIPTION
17 A13 I Address input for 1Gb devices.
NOTE: 1. NC pins not listed may also be reserved for other uses now or in the future. This table simply defines specific NC pins deemed to be of importance.
2, 5, 8, 11, 56, 59, 62, 65 DQ0-7 I/O Data Input/Output: Data bus for x8 (2, 8, 59 and 65 are NC for x4).
5, 11, 56, 62 DQ0-3 I/O Data Input/Output: Data bus for x4.
51 DQS I/O Data Strobe: Output with read data, input with write data. DQS is16, 51 LDQS, UDQS edge-aligned with read data, centered in write data. It is used to
capture data. For the x16 , LDQS is DQS for DQ0-DQ7 and UDQS isDQS for DQ8-DQ15. Pin 16 is NC on x4 and x8.
50 DNU Do Not Use: Must float to minimize noise.
3, 9, 15, 55, 61 VDDQ Supply DQ Power Supply: +2.5V 0.2V. Isolated on the die for improvednoise immunity.
6, 12, 52, 58, 64 VSSQ Supply DQ Ground. Isolated on the die for improved noise immunity.
1, 18, 33 VDD Supply Power Supply: +2.5V 0.2V.
34, 48, 66 VSS Supply Ground.
49 VREF Supply SSTL_2 reference voltage.
14, 17, 19, 25, 43, 53 NC No Connect: These pins should be left unconnected.
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68512Mb: x4, x8, x16 DDR SDRAM Micron Technology, Inc., reserves the right to change products or specifications without notice.
512Mx4x8x16DDR_B.p65 Rev. B; Pub 4/01 2001, Micron Technology, Inc.
512Mb: x4, x8, x16DDR SDRAM
ADVANCE
(TG) OPTION66-PIN PLASTIC TSOP (400 MIL)
NOTE: 1. All dimensions in millimetersMAX
or typical here noted.MIN
2. Package width and length do not include mold protrusion; allowable mold protrusion is 0.25mm perside.
SEE DETAIL A
0.10
0.65 TYP
0.71
10.16 0.08
0.15
0.50 0.10
PIN #1 ID
DETAIL A
22.22 0.08
0.32 .075 TYP
+0.03
-0.02
+0.10
-0.05
1.20 MAX
0.10
0.25
11.76 0.10
0.80 TYP
0.10 (2X)
GAGE PLANE
8000 S. Federal Way, P.O. Box 6, Boise, ID 83707-0006, Tel: 208-368-3900E-mail: [email protected], Internet: http://www.micron.com, Customer Comment Line: 800-932-4992
Micron is a registered trademark and the Micron logo and M logo are trademarks of Micron Technology, Inc.
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Page ttp://support.apple.com/kb/SP43
ast Modified:October 13, 2008
rticle:SP43
Book G4 (Mid 2005) - Technical Specifications
Book G4 (Mid 2005) - Technical Specifications
Configurations 12-inch Combo Drive 14-inch SuperDrive
Model M9846LL/A M9848LL/A
Processor 1.33GHz PowerPC G4 1.42GHz PowerPC G4
Level 2 Cache 512K at 1.33GHz 512K at 1.42GHz
System bus 133MHz 142MHz
Memory (DDR SDRAM) 512MB PC2700 (333MHz) DDR SDRAM; supports up to 1.5GB; 1 available expansion slot
Hard drive 40GB ATA/100 4200 rpm 60GB ATA/100 4200 rpm
Optical drive Slot-Load Combo Drive DVD-ROM/CD-RW Slot-Load SuperDrive DVDRW/CD-RW
Display 12.1-inch (diagonal) TFT XGA 14.1-inch (diagonal) TFT XGA
Graphics support ATI Mobility Radeon 9550 with 32MB of dedicated DDR SDRAM
FireWire One FireWire 400 port at up to 400 Mbps
USB Two USB 2.0 ports at up to 480 Mbps each
VGA, S-video and composite video output Video mirroring supports VGA video out to an external display or projector (requires
included Apple VGA Video Adapter) and S-video and composite video out to a TV or VCR
(requires optional Apple Video Adapter, sold separately).
Modem Built-in 56K V.92 modem
Ethernet Built-in 10/100BASE-T Ethernet
Wireless Built-in 54-Mbps AirPort Extreme (Wi-Fi 802.11g); built-in Bluetooth 2.0+EDR
System software Mac OS X version 10.4 Tiger
Software iLife 06 (includes iTunes, iPhoto, iMovie HD, iDVD , GarageBand, iWeb), Mail,
Dashboard, Spotlight, iChat AV, Safari, Sherlock, QuickTime, iSync, iCal, DVD Player,
Address Book, AppleWorks, iWork (30-day trial), Classic environment, Quicken 2005 for
Macintosh, 2005 World Book Multimedia Reference Suite, Nanosaur 2, Marble Blast Gold,
Microsoft Office 2004 for Mac Test Drive, Zinio Reader, XCode Developer Tools and Apple
Hardware Test
Service and support 90 days of free telephone support and one-year limited warranty. Product contains
documentation. Backup copy of software is provided on CD-ROM.
Hardware accessories Apple VGA Display Adapter, modem cable, power adapter, AC wall plug, power cord,
lithium-ion battery
Build-to-Order Options Order a custom-configured iBook from the onlineApple Storeor an authorized Applereseller.
Memory 256MB (768MB total), 512MB (1GB total), 1GB (1.5GB total)
Hard Drive 60GB, 80GB or 100GB ATA-100 4200RPM
Wireless AirPort Extreme Base Station (with modem and antenna port) M8799LL/A
AirPort Express Base Station M9470LL/A
Adapters and cables Apple Video Adapter M9109G/A
Apple VGA Display Adapter M8639G/A
Apple FireWire Cable (4-pin to 6-pin, 1.8 meter) M8706G/A
Battery and power Apple Portable Power Adapter M8943LL/A
iBook Rechargeable Battery (12.1-inch iBook with Combo drive) M9337G/A
iBook Rechargeable Battery (14.1-inch iBook) M9338G/A
Accessories Apple Wireless Keyboard M9270LL/A
Apple Wireless Mouse M9269Z/A
Apple Keyboard (White) M9034LL/A
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http://www.apple.com/store/http://support.apple.com/kb/index?page=login&redirect=http%3A%2F%2Fsupport.apple.com%2Fkb%2Findex%3Fpage%3Dkb%26id%3DSP43%26locale%3Den_US%26login%3Demailhttp://www.apple.com/store/http://support.apple.com/kb/SP43 -
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11/30/09 12:Book G4 (Mid 2005) - Technical Specifications
Page ttp://support.apple.com/kb/SP43
Technical Specifications
rocessor and memory
1.33GHz or 1.42GHz PowerPC G4 processor with Velocity Engine and 512K on-chip level 2 cache
133MHz or 142MHz system bus
512MB of PC2700 (333MHz) DDR SDRAM with support for up to 1.5GB
torage
40GB or 60GB Ultra ATA hard disk drive
One of the following optical drives:
Combo Drive (DVD-ROM/CD-RW); writes CD-R discs at up to 24x speed, writes CD-RW discs at up to 16x
speed, reads DVD-ROM discs at up to 8x speed, reads CD-ROM discs at up to 24x speed
8x SuperDrive (DVDRW/CD-RW); writes DVDR discs at up to 8x speed, writes DVDRW discs at up to 4x
speed, reads DVDs at up to 8x speed, writes CD-R discs at up to 24x speed, writes CD-RW discs at up to
16x speed, reads CDs at up to 24x speed.
Support for external FireWire and USB storage devices
isplay
Choice of built-in 12.1-inch or 14.1-inch (diagonal) TFT XGA active-matrix display
Support for millions of colors at 1024 x 768 pixel resolution
Support for resolution scaling to 800 x 600 pixel and 640 x 480 pixel resolution with millions of colors
raphics support
ATI Mobility Radeon 9550 graphics processor with 32MB of dedicated video memory and AGP 4X support
ommunications
Built-in 56K V.92 modem (RJ-11 connector)
Built-in 10/100BASE-T Ethernet (RJ-45 connector)
Built-in 54 Mbps AirPort Extreme (compliant with 802.11g standard; Wi-Fi Certified for 802.11g and 802.11b
interoperability)
Built-in Bluetooth 2.0+EDR
eripheral connections
Two 480 Mbps USB 2.0 ports
One FireWire 400 port at up to 400 Mbps
udio
16-bit CD-quality stereo headphone jack
Built-in stereo speakers
Built-in omnidirectional microphone
Support for external USB audio devices such as microphones and speakers
ideo
VGA video output for video mirroring on an external display or projector (24-bit color) with included Apple
VGA Display Adapter.
S-video and composite video output to TV or projector (requires Apple Video Adapter, sold separately)
attery
iBook G4 with 12.1-inch display: 50-watt-hour lithium-ion battery provides up to 6 hours of battery life on a
single charge
iBook G4 with 14.1-inch display: 61-watt-hour lithium-ion battery provides up to 6 hours of battery life on a
single charge
Integrated charge indicator LEDs on battery
eyboard and trackpad
Apple Mouse (White) M9035G/A
iSight M8817LL/C
Services AppleCare Protection Plan M8852LL/A
.Mac Subscription M9888Z/A
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Built-in full-size keyboard with 77 (U.S.) or 78 (ISO) keys, including 12 function keys, 4 arrow keys (inverted
"T" arrangement) and embedded numeric keypad
Solid-state trackpad provides precise cursor control; supports tap, double-tap, drag and scrolling capabilities
lectrical and environmental
Meets ENERGY STAR requirements
Line voltage: 100V to 240V AC
Frequency: 50 to 60 Hz
Operating temperature: 50 to 95 F (10 to 35 C)
Storage temperature: -13 to 113 F (-25 to 45 C)
Relative humidity: 20% to 80% noncondensing
Maximum operating altitude: 10,000 feet
Maximum storage altitude: 15,000 feet
ize and weight (12.1-inch model)
Height: 1.35 inches (3.42 cm)
Width: 11.2 inches (28.5 cm)
Depth: 9.06 inches (23.0 cm)
Weight: 4.9 pounds (2.2 kg)
ize and weight: (14.1-inch model)
Height: 1.35 inches (3.42 cm)
Width: 12.7 inches (32.3 cm)
Depth: 10.2 inches (25.9 cm)
Weight: 5.9 pounds (2.7 kg)
Weight varies by configuration and manufacturing process.
1GB = 1 billion bytes; actual formatted capacity less.
Compatible ISP and telephone services required. Your ISP may not support all V.92 features. Modem will function according to V.90
standards if V.92 services are not available. Actual modem speeds lower; speed depends on connection rate and other factors.
Wireless Internet access requires AirPort Base Station or AirPort Extreme Base Station and Internet access (fees may apply). Some ISPs
are not currently compatible with AirPort. Range may vary with site conditions.
You need an Apple SuperDrive to burn DVDs in iDVD, but you can save iDVD projects as an archive on iBook G4 models with a Combo
Drive and later transfer them to a SuperDrive-equipped system and burn them to a DVD.
Actual rates will vary.
Battery life depends on configuration and use.
ternet access requires a compatible Internet service provider; fees may apply. Product contains electronic documentation. Backup copy
f software is included.
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