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NC-SI Management Interface
The Network Controller Sideband Interface (NC-SI) enables the connection of a Baseboard Management Controller (BMC) to a card for the purpose of
enabling out-of-band remote manageability. NC-SI over the RMII interface is routed through the RMII connector with a flat cable.
The UART0 debug interface is connected to the NC-SI connector through the following pins:
Pin # 30 - UART0 RX
Pin # 28 - UART0 TX
Pin # 26 - GND
The UART interface is complaint with TTL 3.3V voltage level.
UART Interface Connectivity
The USB to UART cable that supports TTL voltage levels can be used to connect the UART Interface for Arm console access. See an example of TTL 3.3V
voltage levels cable in the below figure.
Please note that the USB to UART cable is not used for NC-SI management purposes.
It is prohibited to directly connect any RS-232 cable! Only TTL 3.3V voltage level cables are supported!
USBto UART Cable - Example
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