Техническая Спецификация для Intel Xeon Wolfdale E3210 P4X-UPE3210-316-6M1333

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Datasheet
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DRAM Controller Registers (D0:F0)
5.2.40
EPDCYCTRKWRTREF—EPD CYCTRK WRT REF
B/D/F/Type:
0/0/0/MCHBAR
Address Offset:
A22–A23h
Default Value:
0000h
Access:
RO, RW 
Size:
16 bits
BIOS Optimal Default
0h
EPD CYCTRK WRT ACT Status registers.
5.2.41
EPDCYCTRKWRTRD—EPD CYCTRK WRT READ
B/D/F/Type:
0/0/0/MCHBAR
Address Offset:
A24–A26h
Default Value:
000000h
Access:
RW 
Size:
24 bits
BIOS Optimal Default
000h
EPD CYCTRK WRT RD Status registers.
Bit
Access
Default 
Value
Description
15:9
RO
0s
Reserved 
8:0
RW
0000000
00b
Different Rank REF to REF Delayed (C0sd_cr_rfsh_rfsh): This 
configuration register indicates the minimum allowed spacing (in DRAM clocks) 
between two REF commands to different ranks.
Bit
Access
Default 
Value
Description
23:23
RO
0h
Reserved
22:20
RW
000b
EPDunit DQS Slave DLL Enable to Read Safe (EPDSDLL2RD): Configuration 
setting for Read command safe from the point of enabling the slave DLLs.
19:18
RO
0h
Reserved
17:14
RW
0h
Min ACT To READ Delayed (C0sd_cr_act_rd): This field indicates the 
minimum allowed spacing (in DRAM clocks) between the ACT and READ 
commands to the same rank-bank
13:9
RW
00000b
Same Rank READ to WRITE Delayed (C0sd_cr_wrsr_rd): This field 
indicates the minimum allowed spacing (in DRAM clocks) between the READ and 
WRITE commands.
8:6
RO
0h
Reserved
5:3
RW
000b
Same Rank Read To Read Delayed (C0sd_cr_rdsr_rd): This field indicates 
the minimum allowed spacing (in DRAM clocks) between two READ commands to 
the same rank.
2:0
RO
0h
Reserved