KC82870DH S L5X2 Intel, KC82870DH S L5X2 Datasheet - Page 21

• Manufacturer Part Number: KC82870DH S L5X2
• Manufacturer: Intel

Specifications of KC82870DH S L5X2

• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

3.8
3.9
Intel
®
E8870DH DDR Memory Hub (DMH) Datasheet
Note: The contents written to this register cannot be directly read back. After writing to this register,
RCC – RAMBUS Current Control Register
This register returns the value of the RAC’s internal Current Calibration register, which is set by
performing a manual current calibration or by auto calibration (see
Calibration”).
preform a Manual Current Calibration to load the register contents into the RAC’s internal Current
Calibration register.
RIR – RAC Initialization Register
2:0
(cont’d)
Address:
Default:
Access:
Size:
15:7
6:0
Address:
Default:
Access:
Size:
15:6
5
4
3
Bit
Bit
Bit
1 0 0
1 0 1
1 1 0
1 1 1
Reserved
Current Control:
This seven bit field controls the current for RSL pins DQA[8:0] and DQB[8:0].
Reserved
Ready for Synchronization Packet (RSP):
The DMH sets this bit to 1 when it is ready to accept a Clock-Synchronization MCP. The BIOS must
check this bit before sending the Synchronization packet to DMH.
RAC Initialization Complete (RC):
The DMH sets this bit to 1 after it has completed RAC initialization and clock synchronization. The
BIOS must check this bit to make sure the RAC is properly initialized before initiating memory
accesses.
Initiate RIC Operation (IRO):
When set to 1, the execution of the RIC command specified by bits[2:0] starts. After the execution
is completed the DMH clears this bit to 0. The software must check to see if this bit is zero before
writing to this bit.
R/W: RIC, IRO
0Bh
0040h
R/W
16 bits
0Ch
0000h
R-O: RC, RSP
16 bits
Reserved
Auto Refresh: When the DMH receives this command it issues an Auto Refresh
command to the DIMM side specified by the BC and CS bits of this register. This
command ignores BRD.
Reserved
Reserved
Description
Description
Description
Section 4.4.1, “Current
Registers
3-7