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.
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