ADLINK Technology cPCI-3920 Series Manual de usuario Pagina 41

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Connectors and Switches 27
AMC-1000
4.2 Onboard Switches
PCI Express Mode Switch (SWX3)
Set switch SWX3 to configure AMC ports 8~11 to PCI-E 1 x4 or 4 x1.
See Chipset, “PCI Express” on page 15 for a detailed explanation of
the AMC-1000’s PCI Express functions.
Table 4-4: PCI Express Mode Switch Settings
COM1 Mode Switch Settings (SWX4)
Table 4-5: COM1 Mode Switch Settings
When the switch SWX4 is set to MMC debug mode, the pin
assignment of the RJ45 connector is as below.
Table 4-6: MMC Debug Port Connector Pin Definition
Function Pin 1 Pin 2 Pin 3 Pin 4
PCI-E x4 (default) ON OFF ON ON
4x PCI-E x1 ON ON ON OFF
Mode Pin 1 Pin 2 Pin 3 Pin 4
RS-232 (default) ON ON OFF OFF
MMC Debug OFF OFF ON ON
Pin # Signal Function
1 NC Not connected
2 NC Not connected
3 NC Not connected
4 DBG_TX IPMI Transmit Data
5 DBG_RX IPMI Receive Data
6 GND Ground
7 NC Not connected
8 NC Not connected
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