Nvidia BlueField-2 User Manual page 93

Pin #
28 BF_UART0_TX
29 Not Connected
30 BF_UART0_RX
Table C - NC-SI Connector Pins

PACK_ID[2:0] signals allow for 8 unique card IDs. The system configurator sets the unique value per card via the connecting harness.
Pin #
1 NCSI_REF_CLK
2 GND
3 NCSI_ARB_IN
4 PACK_ID0, connected to BlueField-2 device pin NIC_GPIO[49]
5 NCSI_ARB_OUT
6 PACK_ID1, connected to BlueField-2 device pin NIC_GPIO[47]
7 NCSI_RX_D0
8 GND
9 NCSI_RX_D1
10 GND
11 NCSI_CRS_DV
12 GND
Pin Name
Pin Name
I/O
Output
Input
I/O
Input
GND
Input
Input
Output
Input
Output
GND
Output
GND
Output
GND
Description / Comments
UART transmit serial data output
UART transmit serial data input
Description / Comments
50MHz REF CLK for NC-SI BUS
Ground
NC-SI hardware arbitration input
See the note above table
NC-SI hardware arbitration output
See the note above table
Receive Data Out 0
Ground
Receive Data Out 1
Ground
Carrier Sense / Receive Data Valid
Ground
93