Datasheet

Intel® Xeon® Processor D-1500 Product Family and System Clocks
Intel® Xeon® Processor D-1500 Product Family 41
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
2.5.1.7 SEFLXBP—Single Ended Flex Buffer Parameter Register
Attribute: R/W
Default Value: 00009999h Size: 32-bit
20 PCIe Clock 4 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
19 PCIe Clock 3 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
18 PCIe Clock 2 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
17 PCIe Clock 1 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
16 PCIe* Clock 0 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
15:12 Reserved
11 33MHz Clock 4 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
10 33 MHz Clock 3 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
9 33MHz Clock 2 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
8 33MHz Clock 1 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
7 33MHz Clock 0 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
6:4 Reserved
3 FLEX Clock 3 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
2 Reserved
1 FLEX Clock 1 Output Clock Enable — R/W.
0 = Output is gated to a low state.
1 = Output is enabled to toggle (Default).
0 Reserved
Bit Description
Bit Description
31:16 Reserved
15:13 FLEX3 Clock Buffer Slew Rate Selection — R/W. This parameter controls slew rate of FLEX
clock 3. Each bit step change corresponds to ~0.2 V/ns.
000 = 0.6 V/ns minimum
100 = 1.4 V/ns (Default)
111 = 2.0 V/ns maximum