82945G datasheet, PDF - EEWORLD Datasheet

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82945G: DescriptionDRAM Controller, 4G X 8, CMOS, PBGA1202, 34 X 34 MM, 0.80 MM PITCH, FCBGA-1202; CategoryThe embedded processor and controller Microcontrollers and processors; File Size2MB，318 Pages; ManufacturerIntel; Websitehttp://www.intel.com/

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82945G Overview

DRAM Controller, 4G X 8, CMOS, PBGA1202, 34 X 34 MM, 0.80 MM PITCH, FCBGA-1202

82945G Parametric

Parameter Name	Attribute value
Parts packaging code	BGA
package instruction	34 X 34 MM, 0.80 MM PITCH, FCBGA-1202
Contacts	1202
Reach Compliance Code	compliant
Address bus width	32
boundary scan	NO
Bus compatibility	PENTIUM 4
External data bus width	64
JESD-30 code	S-PBGA-B1202
low power mode	YES
memory organization	4G X 8
Number of blocks	4
Number of terminals	1202
Package body material	PLASTIC/EPOXY
encapsulated code	BGA
Package shape	SQUARE
Package form	GRID ARRAY
Certification status	Not Qualified
Maximum supply voltage	1.575 V
Minimum supply voltage	1.425 V
Nominal supply voltage	1.5 V
surface mount	YES
technology	CMOS
Terminal form	BALL
Terminal location	BOTTOM
uPs/uCs/peripheral integrated circuit type	MEMORY CONTROLLER, DRAM
Base Number Matches	1

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Intel

945G/945GZ/945GC/

945P/945PL Express Chipset

Family

Datasheet

- For the Intel

82945G/82945GZ/82945GC Graphics and Memory

Controller Hub (GMCH) and Intel

82945P/82945PL Memory

Controller Hub (MCH)

June 2008

Document Number:

307502-005

INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL

PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY

ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN

INTEL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL

DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR

WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT,

COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel products are not intended for use in medical, life saving, or life sustaining

applications.

Intel may make changes to specifications and product descriptions at any time, without notice.

Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for

future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.

The Intel

82945G/82945GZ/82945GC GMCH and 82945P/82945PL MCH may contain design defects or errors known as errata, which may cause

the product to deviate from published specifications. Current characterized errata are available on request.

Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.

Hyper-Threading Technology requires a computer system with an Intel

Pentium

4 processor supporting HT Technology and a Hyper-Threading

Technology enabled chipset, BIOS and operating system. Performance will vary depending on the specific hardware and software you use. See

http://www.intel.com/info/hyperthreading/ for more information including details on which processors support HT Technology.

Intel and Pentium are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.

*Other names and brands may be claimed as the property of others.

2005-2008, Intel Corporation

Intel

82945G/82945GZ/82945GC GMCH and 82945P/82945PL MCH Datasheet

Contents

Introduction ....................................................................................................................... 17

1.1

1.2

1.3

Terminology .......................................................................................................... 21

Reference Documents.......................................................................................... 23

(G)MCH Overview ................................................................................................ 23

1.3.1

Host Interface........................................................................................ 24

1.3.2

System Memory Interface ..................................................................... 24

1.3.3

Direct Media Interface (DMI)................................................................. 25

1.3.4

PCI Express* Interface (Intel

82945G/82945GC/82945P/82945PL

(G)MCH Only) ....................................................................................... 26

Graphics (Intel

82945G/82945GC/82945GZ GMCH Only) ................................ 27

Analog and SDVO Displays (Intel

82945G/82945GC/82945GZ GMCH Only) .. 29

1.5.1

System Interrupts .................................................................................. 29

1.5.2

(G)MCH Clocking .................................................................................. 29

1.5.3

Power Management .............................................................................. 30

Host Interface Signals .......................................................................................... 33

DDR2 DRAM Channel A Interface ....................................................................... 36

DDR2 DRAM Channel B Interface ....................................................................... 37

DDR2 DRAM Reference and Compensation ....................................................... 38

PCI Express* Interface Signals (Intel

82945G/82945GC/82945P/82945PL

Only) ..................................................................................................................... 38

Analog Display Signals (Intel

82945G/82945GC/ 82945GZ GMCH Only) ....... 39

Clocks, Reset, and Miscellaneous ....................................................................... 40

Direct Media Interface (DMI) ................................................................................ 41

Intel

Serial DVO (SDVO) Interface (Intel

82945G/82945GC/82945GZ GMCH

Only) ..................................................................................................................... 41

Power and Ground ............................................................................................... 43

Reset States and Pull-up/Pull-downs ................................................................... 44

Platform Configuration .......................................................................................... 50

Configuration Mechanisms ................................................................................... 53

3.3.1

Standard PCI Configuration Mechanism .............................................. 53

3.3.2

PCI Express* Enhanced Configuration Mechanism (Intel

82945G/82945GC/82945P/82945PL (G)MCH Only) ........................... 53

Routing Configuration Accesses .......................................................................... 55

3.4.1

Internal Device Configuration Accesses ............................................... 56

3.4.2

Bridge Related Configuration Accesses ............................................... 56

3.4.2.1

PCI Express* Configuration Accesses (Intel

82945G/82945GC/82945P/82945PL (G)MCH Only) .......... 56

1.4

1.5

Signal Description ............................................................................................................. 31

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

2.10

2.11

Register Description .......................................................................................................... 49

3.1

3.2

3.3

3.4

Intel

82945G/82945G/82945GC GMCH and 82945P/82945PL MCH Datasheet

3.5

3.4.2.2

DMI Configuration Accesses ............................................... 57

I/O Mapped Registers .......................................................................................... 57

3.5.1

CONFIG_ADDRESS—Configuration Address Register ...................... 58

3.5.2

CONFIG_DATA—Configuration Data Register .................................... 59

Device 0 Configuration Register Details .............................................................. 63

4.1.1

VID—Vendor Identification (D0:F0) ...................................................... 63

4.1.2

DID—Device Identification (D0:F0) ...................................................... 63

4.1.3

PCICMD—PCI Command (D0:F0) ....................................................... 64

4.1.4

PCISTS—PCI Status (D0:F0) ............................................................... 65

4.1.5

RID—Revision Identification (D0:F0) .................................................... 66

4.1.6

CC—Class Code (D0:F0) ..................................................................... 66

4.1.7

MLT—Master Latency Timer (D0:F0) ................................................... 67

4.1.8

HDR—Header Type (D0:F0) ................................................................ 67

4.1.9

SVID—Subsystem Vendor Identification (D0:F0) ................................. 67

4.1.10 SID—Subsystem Identification (D0:F0) ................................................ 68

4.1.11 CAPPTR—Capabilities Pointer (D0:F0) ............................................... 68

4.1.12 EPBAR—Egress Port Base Address (D0:F0) ...................................... 69

4.1.13 MCHBAR—(G)MCH Memory Mapped Register Range Base Address

(D0:F0) .................................................................................................. 70

4.1.14 PCIEXBAR—PCI Express* Register Range Base Address (D0:F0)

(Intel

82945G/82945GC/82945P/82945PL (G)MCH Only)................. 71

4.1.15 DMIBAR—Root Complex Register Range Base Address (D0:F0) ...... 73

4.1.16 GGC—GMCH Graphics Control Register (D0:F0) (Intel

82945G/82945GC/82945GZ GMCH Only) .......................................... 74

4.1.17 DEVEN—Device Enable (D0:F0) ......................................................... 75

4.1.18 PAM0—Programmable Attribute Map 0 (D0:F0) .................................. 76

4.1.19 PAM1—Programmable Attribute Map 1 (D0:F0) .................................. 77

4.1.20 PAM2—Programmable Attribute Map 2 (D0:F0) .................................. 78

4.1.21 PAM3—Programmable Attribute Map 3 (D0:F0) .................................. 79

4.1.22 PAM4—Programmable Attribute Map 4 (D0:F0) .................................. 80

4.1.23 PAM5—Programmable Attribute Map 5 (D0:F0) .................................. 81

4.1.24 PAM6—Programmable Attribute Map 6 (D0:F0) .................................. 82

4.1.25 LAC—Legacy Access Control (D0:F0) ................................................. 83

4.1.26 TOLUD—Top of Low Usable DRAM (D0:F0) ....................................... 84

4.1.27 SMRAM—System Management RAM Control (D0:F0) ........................ 85

4.1.28 ESMRAMC—Extended System Management RAM Control (D0:F0) .. 86

4.1.29 ERRSTS—Error Status (D0:F0) ........................................................... 87

4.1.30 ERRCMD—Error Command (D0:F0) ................................................... 88

4.1.31 SKPD—Scratchpad Data (D0:F0) ........................................................ 89

4.1.32 CAPID0—Capability Identifier (D0:F0) ................................................. 89

MCHBAR Register ............................................................................................... 90

4.2.1

C0DRB0—Channel A DRAM Rank Boundary Address 0 .................... 91

4.2.2

C0DRB1—Channel A DRAM Rank Boundary Address 1 .................... 93

4.2.3

C0DRB2—Channel A DRAM Rank Boundary Address 2 .................... 93

4.2.4

C0DRB3—Channel A DRAM Rank Boundary Address 3 .................... 93

4.2.5

C0DRA0—Channel A DRAM Rank 0,1 Attribute ................................. 94

4.2.6

C0DRA2—Channel A DRAM Rank 2,3 Attribute ................................. 94

4.2.7

C0DCLKDIS—Channel A DRAM Clock Disable .................................. 95

4.2.8

C0BNKARC—Channel A DRAM Bank Architecture ............................ 96

4.2.9

C0DRT1—Channel A DRAM Timing Register ..................................... 97

4.2.10 C0DRC0—Channel A DRAM Controller Mode 0 ................................. 98

Host Bridge/DRAM Controller Registers (D0:F0) ............................................................. 61

4.1

4.2

Intel

82945G/82945GZ/82945GC GMCH and 82945P/82945PL MCH Datasheet

4.3

4.2.11 C0DRC1—Channel A DRAM Controller Mode 1 ............................... 100

4.2.12 C1DRB0—Channel B DRAM Rank Boundary Address 0 .................. 100

4.2.13 C1DRB1—Channel B DRAM Rank Boundary Address 1 .................. 100

4.2.14 C1DRB2—Channel B DRAM Rank Boundary Address 2 .................. 100

4.2.15 C1DRB3—Channel B DRAM Rank Boundary Address 3 .................. 101

4.2.16 C1DRA0—Channel B DRAM Rank 0,1 Attribute ............................... 101

4.2.17 C1DRA2—Channel B DRAM Rank 2,3 Attribute ............................... 101

4.2.18 C1DCLKDIS—Channel B DRAM Clock Disable ................................ 101

4.2.19 C1BNKARC—Channel B Bank Architecture ...................................... 101

4.2.20 C1DRT1—Channel B DRAM Timing Register 1 ................................ 102

4.2.21 C1DRC0—Channel B DRAM Controller Mode 0 ............................... 102

4.2.22 C1DRC1—Channel B DRAM Controller Mode 1 ............................... 102

4.2.23 PMCFG—Power Management Configuration .................................... 102

4.2.24 PMSTS—Power Management Status ................................................ 103

EPBAR Registers—Egress Port Register Summary ......................................... 104

4.3.1

EPESD—EP Element Self Description ............................................... 105

4.3.2

EPLE1D—EP Link Entry 1 Description .............................................. 106

4.3.3

EPLE1A—EP Link Entry 1 Address.................................................... 107

4.3.4

EPLE2D—EP Link Entry 2 Description .............................................. 107

4.3.5

EPLE2A—EP Link Entry 2 Address.................................................... 108

Host-PCI Express* Bridge Registers (D1:F0) (Intel

82945G/82945GC/82945P/82945PL

Only) ................................................................................................................................ 109

5.1

Configuration Register Details (D1:F0) .............................................................. 112

5.1.1

VID1—Vendor Identification (D1:F0) .................................................. 112

5.1.2

DID1—Device Identification (D1:F0) .................................................. 112

5.1.3

PCICMD1—PCI Command (D1:F0) ................................................... 113

5.1.4

PCISTS1—PCI Status (D1:F0) ........................................................... 115

5.1.5

RID1—Revision Identification (D1:F0)................................................ 116

5.1.6

CC1—Class Code (D1:F0) ................................................................. 116

5.1.7

CL1—Cache Line Size (D1:F0) .......................................................... 117

5.1.8

HDR1—Header Type (D1:F0) ............................................................ 117

5.1.9

PBUSN1—Primary Bus Number (D1:F0) ........................................... 117

5.1.10 SBUSN1—Secondary Bus Number (D1:F0) ...................................... 118

5.1.11 SUBUSN1—Subordinate Bus Number (D1:F0) ................................. 118

5.1.12 IOBASE1—I/O Base Address (D1:F0) ............................................... 119

5.1.13 IOLIMIT1—I/O Limit Address (D1:F0) ................................................ 119

5.1.14 SSTS1—Secondary Status (D1:F0) ................................................... 120

5.1.15 MBASE1—Memory Base Address (D1:F0) ........................................ 121

5.1.16 MLIMIT1—Memory Limit Address (D1:F0) ......................................... 122

5.1.17 PMBASE1—Prefetchable Memory Base Address (D1:F0) ................ 123

5.1.18 PMLIMIT1—Prefetchable Memory Limit Address (D1:F0) ................. 124

5.1.19 CAPPTR1—Capabilities Pointer (D1:F0) ........................................... 124

5.1.20 INTRLINE1—Interrupt Line (D1:F0) ................................................... 125

5.1.21 INTRPIN1—Interrupt Pin (D1:F0) ....................................................... 125

5.1.22 BCTRL1—Bridge Control (D1:F0) ...................................................... 126

5.1.23 PM_CAPID1—Power Management Capabilities (D1:F0) .................. 128

5.1.24 PM_CS1—Power Management Control/Status (D1:F0) .................... 129

5.1.25 SS_CAPID—Subsystem ID and Vendor ID Capabilities (D1:F0) ...... 130

5.1.26 SS—Subsystem ID and Subsystem Vendor ID (D1:F0) .................... 130

5.1.27 MSI_CAPID—Message Signaled Interrupts Capability ID (D1:F0) .... 131

5.1.28 MC—Message Control (D1:F0) .......................................................... 132

5.1.29 MA—Message Address (D1:F0) ......................................................... 133

Intel

82945G/82945G/82945GC GMCH and 82945P/82945PL MCH Datasheet

82945G Related Products

	82945G	QG82945GCSLA9C	QG82945GCSLB86	82945PL	82945GC	82945GZ	QG82945GZSL927	82945P
Description	DRAM Controller, 4G X 8, CMOS, PBGA1202, 34 X 34 MM, 0.80 MM PITCH, FCBGA-1202	DRAM Controller, 64M X 16, CMOS, PBGA1202, 34 X 34 MM, 0.80 MM PITCH, FCBGA-1202	DRAM Controller, 64M X 16, CMOS, PBGA998, 34 X 34 MM, 0.80 MM PITCH, FCBGA-998	DRAM Controller, 2G X 8, CMOS, PBGA1202, 34 X 34 MM, 0.80 MM PITCH, FCBGA-1202	DRAM Controller, 2G X 8, CMOS, PBGA1202, 34 X 34 MM, 0.80 MM PITCH, FCBGA-1202	DRAM Controller, 2G X 8, CMOS, 37.50 X 37.50 MM, FCBGA	Memory Controller, PBGA1202	DRAM Controller, 4G X 8, CMOS, PBGA1202, 34 X 34 MM, 0.80 MM PITCH, FCBGA-1202
Reach Compliance Code	compliant	compliant	unknown	compliant	compliant	compliant	unknown	compliant
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	BGA	FBGA	FBGA	BGA	BGA	BGA	BGA	BGA
Package form	GRID ARRAY	GRID ARRAY, FINE PITCH	GRID ARRAY, FINE PITCH	GRID ARRAY	GRID ARRAY	GRID ARRAY	GRID ARRAY	GRID ARRAY
surface mount	YES	YES	YES	YES	YES	YES	YES	YES
Terminal form	BALL	BALL	BALL	BALL	BALL	BALL	BALL	BALL
Terminal location	BOTTOM	BOTTOM	BOTTOM	BOTTOM	BOTTOM	BOTTOM	BOTTOM	BOTTOM
Parts packaging code	BGA	-	-	BGA	BGA	BGA	-	BGA
package instruction	34 X 34 MM, 0.80 MM PITCH, FCBGA-1202	FBGA,	FBGA,	34 X 34 MM, 0.80 MM PITCH, FCBGA-1202	34 X 34 MM, 0.80 MM PITCH, FCBGA-1202	37.50 X 37.50 MM, FCBGA	-	34 X 34 MM, 0.80 MM PITCH, FCBGA-1202
Address bus width	32	14	14	32	32	32	-	32
boundary scan	NO	NO	NO	NO	NO	NO	-	NO
Bus compatibility	PENTIUM 4	USB; PCI; I2C; LPC	USB; PCI; I2C; LPC	PENTIUM 4	PENTIUM 4	PENTIUM 4	-	PENTIUM 4
External data bus width	64	64	64	64	64	64	-	64
JESD-30 code	S-PBGA-B1202	S-PBGA-B1202	S-PBGA-B998	S-PBGA-B1202	S-PBGA-B1202	S-PBGA-B	-	S-PBGA-B1202
low power mode	YES	YES	YES	YES	YES	YES	-	YES
memory organization	4G X 8	64M X 16	64M X 16	2G X 8	2G X 8	2G X 8	-	4G X 8
Number of blocks	4	8	8	4	4	4	-	4
Number of terminals	1202	1202	998	1202	1202	-	1202	1202
Package shape	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	-	SQUARE
Certification status	Not Qualified	-	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum supply voltage	1.575 V	1.575 V	1.575 V	1.575 V	1.575 V	1.575 V	-	1.575 V
Minimum supply voltage	1.425 V	1.425 V	1.425 V	1.425 V	1.425 V	1.425 V	-	1.425 V
Nominal supply voltage	1.5 V	1.5 V	1.5 V	1.5 V	1.5 V	1.5 V	-	1.5 V
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	-	CMOS
uPs/uCs/peripheral integrated circuit type	MEMORY CONTROLLER, DRAM	MEMORY CONTROLLER, DRAM	MEMORY CONTROLLER, DRAM	MEMORY CONTROLLER, DRAM	MEMORY CONTROLLER, DRAM	MEMORY CONTROLLER, DRAM	-	MEMORY CONTROLLER, DRAM
Base Number Matches	1	1	1	1	1	1	1	-

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