Programmable Logic Devices (Plds); Table 7. Post Code Led Definition - Intel S7000FC4UR Technical Product Specification

Intel® Server System S7000FC4UR TPS
0
0
0
0
1
1
1
1
1
1
1
1
The Post LEDs are situated as shown in the below table along with the corresponding reference
designators.
Post Code Bit
7 (MSB)
6
5
4
3
2
1
0 (LSB)
2.2.18

Programmable Logic Devices (PLDs)

The main board has two Programmable Logic Devices (PLDs) for fundamental logic on the main
board. Due to the nature of these devices, they are not programmable by an end user.
2.2.18.1 Powergood / Reset
Powergood / Reset: The main board pwren / pwrgd chain begins with logic which checks for
both power supplies' presence and power-ok input assertions. Based on these signals,
PS_PWROK will assert to start the VR chain on the main board. (See Figure 5 for the VR
sequence.)
Upon assertion of the P1V5_PWRGD signal, VTT_PWREN signal will enable the VTT
VR. VTT_PWRGD_3_3V signal from VTT VR to the PLD will enable the
CPU#_VR_PWREN to all regulators of populated CPUs.
Revision 1.0
1 0
1 0
1 1
1 1
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1

Table 7. POST Code LED Definition

LED Reference Designator
DS4E8
DS4E7
DS4E6
DS4E5
DS4E4
DS4E3
DS4E2
DS4E1
0 4
1 5
0 6
1 7
0 8
1 9
0 A
1 B
0 C
1 D
0 E
1 F
POST Code LEDs
Main Board
19