Intel BLKD946GZABL Product Specification - Page 51
Add-in Card Connectors
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Technical Reference 2.7.2.1 Add-in Card Connectors The board has the following add-in card connectors: • PCI Express x16: one connector supporting simultaneous transfer speeds up to 4 GBytes/sec of peak bandwidth per direction and up to 8 GBytes/sec concurrent bandwidth • PCI Express x1: one PCI Express x1 connector. The x1 interface supports simultaneous transfer speeds up to 250 Mbytes/sec of peak bandwidth per direction and up to 500 MBytes/sec concurrent bandwidth • PCI Conventional (rev 2.3 compliant) bus: two PCI Conventional bus add-in card connectors. The SMBus is routed to PCI Conventional bus connector 2 only. PCI Conventional bus add-in cards with SMBus support can access sensor data and other information residing on the board. 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 PCI Conventional bus connector 2. This enables PCI Conventional bus add-in boards with SMBus support to access sensor data on the 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. 51
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