Intel S975XBX2 Product Specification - Page 62

Add-in Card Connectors, 7.2.3, Auxiliary Front Panel Power/Sleep LED Header

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Intel Workstation Board S975XBX2 Technical Product Specification 2.7.2.2 Add-in Card Connectors The board has the following add-in card connectors: • Primary PCI Express x16 (electrical x16 or x8) bus add-in card connector; one connector supporting simultaneous transfers up to 8 GBytes/sec • Secondary PCI Express x16 (electrical x8) bus add-in card connector; one connector supporting simultaneous transfers up to 4 GBytes/sec • PCI Express x16 (electrical x4) add-in card connector; one connector supporting simultaneous transfers up to 1 GBytes/sec. This connector can also be used for PCI Express x1 add-in cards. • PCI Conventional (rev 2.2 compliant) bus; two PCI Conventional bus add-in card connectors. Note the following considerations for the PCI Conventional bus connectors: • All of the PCI Conventional bus connectors are bus master capable. • SMBus signals are routed to both PCI Conventional bus connectors. This enables PCI Conventional bus add-in boards with SMBus support to access sensor data on the Workstation Board. The specific SMBus signals are as follows: ⎯ The SMBus clock line is connected to pin A40. ⎯ The SMBus data line is connected to pin A41. 2.7.2.3 Auxiliary Front Panel Power/Sleep LED Header Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header. Table 28. Auxiliary Front Panel Power/Sleep LED Header Pin Signal Name 1 HDR_BLNK_GRN 2 Not connected 3 HDR_BLNK_YEL In/Out Out Out Description Front panel green LED Front panel yellow LED 62

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Intel Workstation Board S975XBX2 Technical Product Specification
62
2.7.2.2
Add-in Card Connectors
The board has the following add-in card connectors:
•
Primary PCI Express x16 (electrical x16 or x8) bus add-in card connector; one
connector supporting simultaneous transfers up to 8 GBytes/sec
•
Secondary PCI Express x16 (electrical x8) bus add-in card connector; one
connector supporting simultaneous transfers up to 4 GBytes/sec
•
PCI Express x16 (electrical x4) add-in card connector; one connector supporting
simultaneous transfers up to 1 GBytes/sec.
This connector can also be used for
PCI Express x1 add-in cards.
•
PCI Conventional (rev 2.2 compliant) bus; two PCI Conventional bus add-in card
connectors.
Note the following considerations for the PCI Conventional bus connectors:
•
All of the PCI Conventional bus connectors are bus master capable.
•
SMBus signals are routed to both PCI Conventional bus connectors.
This enables
PCI Conventional bus add-in boards with SMBus support to access sensor data on
the Workstation Board.
The specific SMBus signals are as follows:
⎯
The SMBus clock line is connected to pin A40.
⎯
The SMBus data line is connected to pin A41.
2.7.2.3
Auxiliary Front Panel Power/Sleep LED Header
Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel
header.
Table 28. Auxiliary Front Panel Power/Sleep LED Header
Pin
Signal Name
In/Out
Description
1
HDR_BLNK_GRN
Out
Front panel green LED
2
Not connected
3
HDR_BLNK_YEL
Out
Front panel yellow LED