Specification Sheet

MCHBAR Registers
238 Datasheet, Volume 2 of 2
7.74 GT—Offset 5948h
P-state encoding for the Secondary Power Plane's current PLL frequency and the
current VID.
Access Method
Default: 0h
Bit
Range
Default &
Access
Field Name (ID): Description
31:24
0h
RO_V
UCLK_RATIO: RING UCLK RATIO. Reference=100Mhz
23:16
0h
RO_V
ICLK_RATIO: IMGU ICLK RATIO. Reference=25Mhz
15:8
0h
RO_V
FCLK_RATIO: SA FCLK RATIO. Reference=100Mhz
7
0h
RO_V
QCLK_REFERENCE: DDR QCLK REFERENCE. 0=133Mhz, 1=100Mhz
6:0
0h
RO_V
QCLK_RATIO: DDR QCLK RATIO. Reference determined by QCLK_REFERENCE
Type: MEM
(Size: 32 bits)
Offset: [B:0, D:0, F:0] + 5948h
3
1
2
8
2
4
2
0
1
6
1
2
8 4 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RSVD
RP_STATE_RATIO_SLICE
RP_STATE_RATIO_UNSLICE
RP_STATE_VOLTAGE
Bit
Range
Default &
Access
Field Name (ID): Description
31:26
0h
RO
Reserved (RSVD): Reserved.
25:17
0h
RO_V
RP_STATE_RATIO_SLICE: GT Slices frequency, in granularity of 16.666Mhz.
When GT is in RC6, or when all slices are disabled, this frequency is ZERO.
16:8
0h
RO_V
RP_STATE_RATIO_UNSLICE: GT Unslice frequency, in granularity of 16.666 MHz.
When GT is in RC6 this frequency is ZERO.
7:0
0h
RO_V
RP_STATE_VOLTAGE: Voltage of the current RP-state.