KC82870DH S L5X2 Intel, KC82870DH S L5X2 Datasheet - Page 38

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

Specifications of KC82870DH S L5X2

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

Functional Description
4.11
4.11.1
4.11.2
4-10
Figure 4-5. DRCG Connection Diagram
Figure 4-6. Register Read MSIO Transaction
Overview
The CMOS interface signals on the MSIO Bus are used to perform DMH initialization, DIMM
Serial Presence Detect (SPD), DIMM initialization, and DMH register access.
The MSIO bus is a point-to-point interface. Using the MSIO bus, Control Transactions are
communicated between the SNC and the DMH.
MSIO Transaction Packet Formats
A Control Transaction consists of four serial control packets as described below.
There are two kinds of control transactions.
Read and Register Write control transactions. Register Read and Register Write transactions are
used to access the DMH internal registers, and for DIMM SPD.
Serial Interface
1. Main Channel Serial request, SRQ.
2. Main Channel Serial address, SA.
3. Main Channel Serial interval, SINT.
4. Main Channel Serial data, SD.
SINT
SCK
SRQ
SA
SD
SNC
0
Reserved
1
Reserved
RAC
2
3
4
Figure 4-6
5
CFM
CTM
Intel
6
SD[15:0]
®
SOP[3:0]
7
E8870DH DDR Memory Hub (DMH) Datasheet
0
RAC
8
and
SA[11:0]
9
V
Figure 4-7
term
10
Reserved
11
DMH
12
show the layout of Register
13
DRCG
C[2:0]
14
15
001183a
001185