Datasheet

Intel
®
82845G/82845GL/82845GV GMCH Datasheet 9
Tables
2-1 DDR-to-SDR Signal Mapping ........................................................................26
2-2 Voltage Levels and RCOMP for Various Interfaces.......................................37
3-1 DRAM Controller/Host-Hub Register Address Map (Device 0)......................48
3-2 PAM Register Attributes................................................................................. 65
3-3 Host-to-AGP Register Address Map (Device 1).............................................78
3-4 VGAEN and MDAP Bit Definitions .................................................................91
3-5 Integrated Graphics Device Register Address Map (Device2) ......................92
4-1 DINV Signals vs. Data Bytes .......................................................................105
4-2 Supported DDR DIMM Configurations.........................................................108
4-3 Supported SDR DIMM Configurations .........................................................108
4-4 Data Bytes on DIMM Used for Programming DRAM Registers................... 109
4-5 Address Translation and Decoding.............................................................. 110
4-6 AGP Commands Supported by GMCH When Acting As an AGP Target ....112
4-7 PCI Commands Supported by GMCH When Acting As a PCI Target .........115
4-8 PCI Commands Supported by GMCH When Acting As an
AGP/PCI_B Initiator .....................................................................................116
4-9 Display Port Characteristics.........................................................................131
4-10 Analog Port Characteristics .........................................................................132
5-1 Memory Segments and Their Attributes ......................................................141
5-2 Pre-allocated Memory..................................................................................144
6-1 Absolute Maximum Ratings .........................................................................147
6-2 Intel
®
82845G GMCH Package Thermal Resistance ..................................147
6-3 Power Characteristics ..................................................................................148
6-4 Signal Groups ..............................................................................................148
6-5 DC Operating Characteristics ......................................................................150
6-6 DC Characteristics .......................................................................................151
6-7 DAC DC Characteristics: Functional Operating Range
(VCCDAC = 1.5 V ±5%)...............................................................................153
6-8 DAC Reference and Output Specifications..................................................154
6-9 DAC AC Characteristics...............................................................................154
7-1 Intel
®
82845G GMCH Ballout by Ball Number.............................................158
7-2 Intel
®
82845G GMCH Ballout by Signal Name ............................................164
8-1 XOR Chain Output Pins ...............................................................................173
8-2 XOR Chains 0, 1, and 2 ...............................................................................174
8-3 XOR Chains 3, 4, and 5 ...............................................................................176
8-4 XOR Chains 6, 7, and 8 ...............................................................................178
8-5 XOR Chains Excluded Pins .........................................................................180
9-1 Intel
®
82845GL/82845GV Ballout by Signal Name......................................187