AMD-762 datasheet(23/122 Pages) AMD

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Chapter 2

Functional Operation

24416C—December 2001

AMD-762™ System Controller Data Sheet

Preliminary Information

Support of four registered DIMMs is accomplished by the

AMD-762 system controller’s eight DDR chip-select pins

(CS[7:0]#), which allow DIMMs with two chip selects as

illustrated in Figure 5 on page 12. In this example, each DIMM

contains two physical DRAM banks, thus two chip selects are

routed to the DIMM. The AMD-762 system controller provides

one differential clock pair for each registered DIMM.

Table 1.

Total Memory Sizes

Devices used on DIMM

1 DIMM

(2 Rows)

x64/x72

2 DIMMs

(2 Rows Each)

x64/x72

3 DIMMs

(2 Rows Each)

x64/x72

4 DIMMs

(2 Rows Each)

x64/x72

64 Mbit (4M x 4 x 4 banks)

256 Mbytes

512 Mbytes

768 Mbytes

1 Gbytes

64 Mbit (2M x 8 x 4 banks)

128 Mbytes

256 Mbytes

384 Mbytes

512 Mbytes

64 MBit (1M x 16 x 4 banks)

64 Mbytes

128 Mbytes

192 Mbytes

256 Mbytes

128 MBit (8M x 4 x 4 banks)

512 Mbytes

1 Gbytes

1.5 Gbytes

2 Gbytes

128 MBit (4M x 8 x 4 banks)

256 Mbytes

512 Mbytes

768 Mbytes

1 Gbytes

128 MBit (2M x 16 x 4 banks)

128 Mbytes

256 Mbytes

384 Mbytes

512 Mbytes

256 MBit (16M x 4 x 4 banks)

1 Gbytes

2 Gbytes

3 Gbytes

4 Gbytes

256 MBit (8M x 8 x 4 banks)

512 Mbytes

1 Gbytes

1.5 Gbytes

2 Gbytes

256 MBit (4M x 16 x 4 banks)

256 Mbytes

512 Mbytes

768 Mbytes

1 Gbytes

512 MBit (32M x 4 x 4 banks)

2 Gbytes

4 Gbytes

512 MBit (16M x 8 x 4 banks)

1 Gbytes

2 Gbytes

3 Gbytes

4 Gbytes

512 MBit (8M x 16 x 4 banks)

512 Mbytes

1 Gbytes

1.5 Gbytes

2 Gbytes

Note:

The maximum address space supported by the AMD-762 system controller is 4 Gbytes.

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