Intel BX80605I7870 Data Sheet - Page 97

Integrated Memory Controller Miscellaneous, Registers

Page 97 highlights

Register Description 2.13.11 MC_DDR_THERM_STATUS0 MC_DDR_THERM_STATUS1 MC_DDR_THERM_STATUS2 This register contains the status portion of the DDR_THERM# functionality as described in the processor datasheet (i.e., what is happening or has happened with respect to the pin). Device: 4, 5, 6 Function: 3 Offset: A4h Access as a Dword Bit Type Reset Value Description ASSERTION. 2 RO 0 An assertion edge was seen on DDR_THERM#. Write-1-to-clear. 1 RO 0 DEASSERTION. A de-assertion edge was seen on DDR_THERM#. Write-1-to-clear. STATE. Present logical state of DDR_THERM# bit. This is a static indication of the pin, and may be several clocks out of date due to the delay between the pin and the 0 RO 0 signal. STATE = 0 means DDR_THERM# is deasserted STATE = 1 means DDR_THERM# is asserted 2.14 2.14.1 Integrated Memory Controller Miscellaneous Registers MC_DIMM_CLK_RATIO_STATUS This register contains status information about DIMM clock ratio. Device: 3 Function: 4 Offset: 50h Access as a Dword Bit 28:24 4:0 Type RO RO Reset Value 0 0 Description MAX_RATIO. Maximum ratio allowed by the part. Value = Qclk 00000 = RSVD 00110 = 800 MHz 01000 = 1066 MHz 01010 = 1333 MHz QCLK_RATIO. Current ratio of Qclk. Value = Qclk. 00000 = RSVD 00110 = 800 MHz 01000 = 1066 MHz 01010 = 1333 MHz Datasheet 97

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Datasheet
97
Register Description
2.13.11
MC_DDR_THERM_STATUS0
MC_DDR_THERM_STATUS1
MC_DDR_THERM_STATUS2
This register contains the status portion of the DDR_THERM# functionality as described
in the processor datasheet (i.e., what is happening or has happened with respect to the
pin).
2.14
Integrated Memory Controller Miscellaneous
Registers
2.14.1
MC_DIMM_CLK_RATIO_STATUS
This register contains status information about DIMM clock ratio.
Device:
4, 5, 6
Function: 3
Offset:
A4h
Access as a Dword
Bit
Type
Reset
Value
Description
2
RO
0
ASSERTION.
An assertion edge was seen on DDR_THERM#. Write-1-to-clear.
1
RO
0
DEASSERTION.
A de-assertion edge was seen on DDR_THERM#. Write-1-to-clear.
0
RO
0
STATE.
Present logical state of DDR_THERM# bit. This is a static indication of the pin,
and may be several clocks out of date due to the delay between the pin and the
signal.
STATE = 0 means DDR_THERM# is deasserted
STATE = 1 means DDR_THERM# is asserted
Device:
3
Function: 4
Offset:
50h
Access as a Dword
Bit
Type
Reset
Value
Description
28:24
RO
0
MAX_RATIO.
Maximum ratio allowed by the part.
Value = Qclk
00000 = RSVD
00110 = 800 MHz
01000 = 1066 MHz
01010 = 1333 MHz
4:0
RO
0
QCLK_RATIO.
Current ratio of Qclk.
Value = Qclk.
00000 = RSVD
00110 = 800 MHz
01000 = 1066 MHz
01010 = 1333 MHz