Intel DX79SI Intel Desktop Board DX79SI Technical Product Specification - Page 53

Add-in Card Connectors

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Technical Reference Table 20. Back Panel CIR Emitter (Output) Header Pin Signal Name 1 Emitter out 1 2 Emitter out 2 3 Ground 4 Key (no pin) 5 Jack detect 1 6 Jack detect 2 Table 21. Front Panel CIR Receiver (Input) Header Pin Signal Name 1 Ground 2 LED 3 NC 4 Learn-in 5 5 V standby 6 VCC 7 Key (no pin) 8 CIR Input 2.2.2.2 Add-in Card Connectors The board has the following add-in card connectors: • PCI Express 3.0 x16: three PCI Express 3.0 x16 connectors supporting simultaneous transfer speeds up to 16 GB/s of peak bandwidth per direction and up to 32 GB/s concurrent bandwidth. • PCI Express 2.0 x1: two PCI Express 2.0 x1 connectors. The x1 interface supports simultaneous transfer speeds up to 500 MB/s of peak bandwidth per direction and up to 1.0 GB/s concurrent bandwidth. • Conventional PCI (rev 2.3 compliant) bus: one Conventional PCI bus add-in card connector. Note the following considerations for the Conventional PCI bus connector: • The Conventional PCI bus connectors are bus master capable. • SMBus signals are routed to the Conventional PCI bus connectors. This enables Conventional PCI bus add-in boards with SMBus support to access sensor data on the desktop 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. 53

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Technical Reference
53
Table 20.
Back Panel CIR Emitter (Output) Header
Pin
Signal Name
1
Emitter out 1
2
Emitter out 2
3
Ground
4
Key (no pin)
5
Jack detect 1
6
Jack detect 2
Table 21.
Front Panel CIR Receiver (Input) Header
Pin
Signal Name
1
Ground
2
LED
3
NC
4
Learn-in
5
5 V standby
6
VCC
7
Key (no pin)
8
CIR Input
2.2.2.2
Add-in Card Connectors
The board has the following add-in card connectors:
•
PCI Express 3.0 x16:
three PCI Express 3.0 x16 connectors supporting
simultaneous transfer speeds up to 16 GB/s of peak bandwidth per direction and
up to 32 GB/s concurrent bandwidth.
•
PCI Express 2.0 x1:
two PCI Express 2.0 x1 connectors.
The x1 interface supports
simultaneous transfer speeds up to 500 MB/s of peak bandwidth per direction and
up to 1.0 GB/s concurrent bandwidth.
•
Conventional PCI (rev 2.3 compliant) bus:
one Conventional PCI bus add-in card
connector.
Note the following considerations for the Conventional PCI bus connector:
•
The Conventional PCI bus connectors are bus master capable.
•
SMBus signals are routed to the Conventional PCI bus connectors.
This enables
Conventional PCI bus add-in boards with SMBus support to access sensor data on
the desktop 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.