HH80556KH0364M S LAGD Intel, HH80556KH0364M S LAGD Datasheet - Page 192

• Manufacturer Part Number: HH80556KH0364M S LAGD
• Manufacturer: Intel

Specifications of HH80556KH0364M S LAGD

• Rad Hardened: No
• Lead Free Status / RoHS Status: Compliant

3.9.3.2
Table 60.
3.9.3.3
Intel
Datasheet
192
®
5100 Memory Controller Hub Chipset
MEMTOHOSTGRCFG0: MEM to Host Gear Ratio Configuration 0
This register consists of 8 nibbles of mux select data for the proper selection of gearing
behavior in the MC. This is the first of two registers to control the behavior for the
DRAM to host (Northbound) data flow.
MEM to Host Gear Ratio Mux for
MEMTOHOSTGRCFG1: MEM to Host Gear Ratio Configuration 1
This register consists of 8 nibbles of mux select data for the proper selection of gearing
behavior in the MC for the 1:1 and 4:5 modes. This is the second register for MEM to
Host gearing control.
Device:
Function:
Offset:
Device:
Function:
Offset:
Device:
Function:
Offset:
FSB: Memory Frequency
2:0
Bit
31:0
31:0
Bit
Bit
RWST
333:333
267:267
333:267
267:333
Attr
RWST
RWST
Attr
Attr
16
1
56h
16
1
160h
16
1
164h
Default
001
11111111h
00000000h
Default
Default
DDRFRQ: CORE:DDR Frequency Ratio (write new ratio to these bits)
‘000’ = 1:1. BUSCLK=266 MHz, DDR=533 MHz.
‘001’ = 1:1. BUSCLK=333 MHz, DDR=667 MHz.
‘010’ = 4:5. BUSCLK=266 MHz, DDR=667 MHz.
‘011’ = 5:4. BUSCLK=333 MHz, DDR=533 MHz.
‘1xx’ = Reserved
Writing this field will set the relationship between the CORE- and MEM-domain.
MEMHSTGRMUX: MEM to Host Clock Gearing mux selector.
Eight nibbles of mux select for memory/DDR2 to MC/core geared clock
boundary crossing phase enables.
Refer to
for the programming details.
MEMHSTGRMUX: MEM to Host Clock Gearing mux selector.
Eight nibbles of mux select for memory/DDR2 to MC/core geared clock
boundary crossing phase enables.
Refer to
for the programming details.
Gear Ratio
1:1
5:4
4:5
Table 60, “MEM to Host Gear Ratio Mux for MEMTOHOSTGRCFG0”
Table 61, “MEM to Host Gear Ratio Mux for MEMTOHOSTGRCFG1”
MEMTOHOSTGRCFG0
Intel
Description
conservative
conservative
®
Description
Description
5100 MCH Chipset—Register Description
Option
only
Order Number: 318378-005US
11111111h
00010320h
00005430h
Value
July 2009