30-pin NC-SI Connector

Warning

The below table applies to the engineering samples of the following OPNs:

MBF2H516C-EECOT, MBF2H516C-EESOT, MBF2M516C-EECOT and MBF2M516C-EESOT.

Pin #	Pinout	I/O	Description / Comments
1	NCSI_REF_CLK	Input	50MHz REF CLK for NC-SI BUS
2	GND	GND	Ground
3	NCSI_ARB_IN	Input	NC-SI hardware arbitration input
4	PACK_ID0, connected to BlueField-2 device pin NIC_GPIO[49]	Input	See the note above table
5	NCSI_ARB_OUT	Output	NC-SI hardware arbitration output
6	PACK_ID1, connected to BlueField-2 device pin NIC_GPIO[47]	Input	See the note above table
7	NCSI_RX_D0	Output	Receive Data Out 0
8	GND	GND	Ground
9	NCSI_RX_D1	Output	Receive Data Out 1
10	GND	GND	Ground
11	NCSI_CRS_DV	Output	Carrier Sense / Receive Data Valid
12	GND	GND	Ground
13	NCSI_TX_D0	Input	Transmit Data In 0
14	GND	GND	Ground
15	NCSI_TX_D1	Input	Transmit Data In 0
16	GND	GND	Ground
17	NCSI_TX_EN	Input	Transmit Enable
18	GND	GND	Ground
19	Reserved
20	Reserved
21	BMC_I2C2_SDA	Input/Output	Open-drain signal
22	NIC_BMC_CTRL1, connected to BMC device pin W4 (Open Drain)	Input/Output	Open-drain signal
23	BMC_I2C2_SCL	Input/Output	Open-drain signal
24	PACK_ID2, connected to BlueField-2 device pin NIC_GPIO[46]	Input	See description above table
25	GND	GND	Ground
26	NIC_BMC_CTRL0, connected to BMC device pin Y3 (Open Drain)
27	Not Connected
28	BMC_TX5	Output	UART transmit serial data output
29	Not Connected
30	BMC_RX5	Input	UART transmit serial data input