Datasheet
Intel® Xeon® Processor D-1500 Product Family and System Clocks
Intel® Xeon® Processor D-1500 Product Family 47
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
2.5.1.14 PM2PCIECLK—Power Management 2 PCIe Clock Register
Attribute: R/W
Default Value: 00000098h Size: 32-bit
3:0 CLKRQ# Select for CLKOUT_PCIE0_P/N — R/W. Select version of external input CLKRQ# for
dynamic control of the output CLKOUT_PCIE0_P/N.
0000 = PCIECLKRQ0# controls CLKOUT_PCIE0_P/N (Default)
0001 = PCIECLKRQ1# controls CLKOUT_PCIE0_P/N
0010 = PCIECLKRQ2# controls CLKOUT_PCIE0_P/N
0011 = PCIECLKRQ3# controls CLKOUT_PCIE0_P/N
0100 = PCIECLKRQ4# controls CLKOUT_PCIE0_P/N
0101 = PCIECLKRQ5# controls CLKOUT_PCIE0_P/N
0110 = PCIECLKRQ6# controls CLKOUT_PCIE0_P/N
0111 = PCIECLKRQ7# controls CLKOUT_PCIE0_P/N
1000 = PEG_A_CLKRQ# controls CLKOUT_PCIE0_P/N
1001 = PEG_B_CLKRQ# controls CLKOUT_PCIE0_P/N
1010 – 1111 = RSVD
Bit Description
Bit Description
31:27 Reserved
26 Enable CLKREQ# for CLKOUT_ ITPXDP_P/N — R/W. Enable dynamic control of CLKOUT_
ITPXDP_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_ ITPXDP_P/N (Default)
1 = Enable dynamic control of CLKOUT_ ITPXDP_P/N
25 Enable CLKREQ# for CLKOUT_ PEG_B_P/N — R/W. Enable dynamic control of
CLKOUT_PEG_B_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_PEG_B_P/N (Default)
1 = Enable dynamic control of CLKOUT_PEG_B_P/N
24 Enable CLKREQ# for CLKOUT_ PEG_A_P/N — R/W. Enable dynamic control of CLKOUT_
PEG_A_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_ PEG_A_P/N (Default)
1 = Enable dynamic control of CLKOUT_ PEG_A_P/N
23 Enable CLKREQ# for CLKOUT_ PCIE7_P/N — R/W. Enable dynamic control of CLKOUT_
PCIE7_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_ PCIE7_P/N (Default)
1 = Enable dynamic control of CLKOUT_ PCIE7_P/N
22 Enable CLKREQ# for CLKOUT_ PCIE6_P/N — R/W. Enable dynamic control of CLKOUT_
PCIE6_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_ PCIE6_P/N (Default)
1 = Enable dynamic control of CLKOUT_ PCIE6_P/N
21 Enable CLKREQ# for CLKOUT_ PCIE5_P/N — R/W. Enable dynamic control of CLKOUT_
PCIE5_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_ PCIE5_P/N (Default)
1 = Enable dynamic control of CLKOUT_ PCIE5_P/N
20 Enable CLKREQ# for CLKOUT_ PCIE4_P/N — R/W. Enable dynamic control of CLKOUT_
PCIE4_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_ PCIE4_P/N (Default)
1 = Enable dynamic control of CLKOUT_ PCIE4_P/N
19 Enable CLKREQ# for CLKOUT_ PCIE3_P/N — R/W. Enable dynamic control of CLKOUT_
PCIE3_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_ PCIE3_P/N (Default)
1 = Enable dynamic control of CLKOUT_ PCIE3_P/N
18 Enable CLKREQ# for CLKOUT_ PCIE2_P/N — R/W. Enable dynamic control of CLKOUT_
PCIE2_P/N by the mapped CLKREQ#. This register bit may be updated dynamically.
0 = Disable dynamic control of CLKOUT_ PCIE2_P/N (Default)
1 = Enable dynamic control of CLKOUT_ PCIE2_P/N










