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參數(shù)資料
| 型號： | AMDOPTERON |
| 英文描述： | AMD Opteron - AMD Opteron Processor Data Sheet |
| 中文描述： | AMD Opteron處理器- AMD Opteron處理器的數(shù)據(jù)資料 |
| 文件頁數(shù)： | 18/81頁 |
| 文件大?。?/td> | 1189K |
| 代理商： | AMDOPTERON |
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18
Functional Description
Chapter 2
AMD Opteron
Processor Data Sheet
23932 Rev 3.00 April 2003
Table 3.
Total Memory Sizes Per Chip Select
The memory controller does not perform partial writes to DRAM (i.e., less than the programmed
DRAM burst length), thus the data mask (DM) function is not required. Instead, all partial writes
result in a read-modify-write transaction. The read portion of these read-modify-writes are
performance-optimized such that they are ordered behind normal read cycles. The processor
’
s
memory controller always drives the DM pins Low, except when they are functioning as DQS pins, as
described in
“
Memory Pin Interface
”
on page 16.
The controller supports programmable timing and refresh as described in the
BIOS and Kernel
Developer
’
s Guide for the AMD Athlon
64 and AMD Opteron
Processors
, order# 26094. Auto-
refresh is supported and is staggered by t
RFC
across chip-selects to reduce system noise. Unpopulated
DIMM slots are not refreshed.
2.4.2.3
DRAM Power Management
The memory controller supports self-refresh mode to accommodate various power management states
such as ACPI S1 and S3 states. The MEMRESET_L pin is provided for resetting the registers on
registered DDR SDRAM DIMMs as required for the S3 (Suspend-to-RAM) power management
state.
Devices Used on DIMMs
Size Per CS
Comments
64 M-bit (4M x4-bits x4 banks)
128 Mbyte
64 M-bit (2M x8-bits x4 banks)
64 Mbyte
64 M-bit (1M x16-bits x4 banks)
32 Mbyte
128 M-bit (8M x4-bits x4 banks)
256 Mbyte
128 M-bit (4M x8-bits x4 banks)
128 Mbyte
128 M-bit (2M x16-bits x4 banks)
64 Mbyte
256 M-bit (16M x4-bits x4 banks)
512 Mbyte
256 M-bit (8M x8-bits x4 banks)
256 Mbyte
256 M-bit (4M x16-bits x4 banks)
128 Mbyte
512 M-bit (16M x8-bits x4 banks)
512 Mbyte
512 M-bit (8M x16-bits x4 banks)
256 Mbyte
1 G-bit (64M x4-bits x4 banks)
2 Gbyte
1 G-bit (32M x8-bits x4 banks)
1 Gbyte
1 G-bit (16M x16-bits x4 banks)
512 Mbyte
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