Pin Description

NVIDIA Docs Hub NVIDIA Networking BlueField DPUs / SuperNICs & DOCA NVIDIA BlueField BF1600 InfiniBand/Ethernet Controller Card User Manual Pin Description

PCI Express Interface

PCIe x16 Gen 3.0/4.0 Edge Connector

The BF1600 Controller Card uses a PCI Express x16 connector (component and print sides) according to the PCI Express 3.0/4.0 specifications. The following two tables provide component side pins description and print side pins description. For further details, please refer to PCIe x16 Gen 3.0/4.0 Edge Interface.

Warning

HSOp(x) and HSOn(x) stand for High Speed Output and HSIp(x) and HSIn(x) stand for High Speed Input. The direction is relative to the motherboard or system board.

PCIe x16 Edge Connector Pins Description - Print Side

Pin#	Pin Name	Pin Direction^a	Description
1	PRSNT#1	Input	The presence detects indication. Should be grounded on the carrier board.
2	+12v	Input	Power
3	+12v	Input	Power
4	GND		Ground
5	JTAG_HOST_TCK	Input	No connected
6	JTAG_HOST_TDI	Input	No connected
7	JTAG_HOST_TDO	Output	No connected
8	JTAG_HOST_TMS	Input	No connected
9	+3.3v	Input	Power
10	+3.3v	Input	Power
11	PERST#	Output	PCIe Interface Reset# For the PCIe interface via the card PCIe Edge connector For System NIC mode, it's direction will turn as input.
Mechanical Key
12	GND	Ground	Ground
13	REFCLK+	NA	PCIe Reference Differential Clock. Not Connected (default) PCIe separated clocking default scheme Assembly option to support PCIe shared clocking scheme: For BlueField Controller Card, REFCLK will be output For SmartNIC mode, REFCLK will be input
14	REFCLK-	NA
15	GND		Ground
16	HSIp(0)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
17	HSIn(0)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
18	GND		Ground
19	RSVD	NA	NC optional on-board CPLD connectivity
20	GND		Ground
21	HSIp(1)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
22	HSIn(1)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
23	GND		Ground
24	GND		Ground
25	HSIp(2)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
26	HSIn(2)
27	GND		Ground
28	GND		Ground
29	HSIp(3)	Output	BlueField Card PCIE TX to Carrier Board PCIe RX
30	HSIn(3)
31	GND		Ground
32	RSVD	Input	UART0_RXD - Connected to BlueField SoC UART0 RX
33	RSVD	Output	UART0_TXD - Connected to BlueField SoC UART0 TX
34	GND		Ground
35	HSIp(4)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
36	HSIn(4)
37	GND		Ground
38	GND		Ground
39	HSIp(5)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
40	HSIn(5)
41	GND		Ground
42	GND		Ground
43	HSIp(6)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
44	HSIn(6)
45	GND		Ground
46	GND		Ground
47	HSIp(7)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
48	HSIn(7)
49	GND		Ground
50	RSVD	NA	Not connected
51	GND		Ground
52	HSIp(8)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
53	HSIn(8)
54	GND		Ground
55	GND		Ground
56	HSIp(9)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
57	HSIn(9)
58	GND		Ground
59	GND		Ground
60	HSIp(10)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
61	HSIn(10)
62	GND		Ground
63	GND		Ground
64	HSIp(11)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
65	HSIn(11)
66	GND		Ground
67	GND		Ground
68	HSIp(12)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
69	HSIn(12)
70	GND		Ground
71	GND		Ground
72	HSIp(13)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
73	HSIn(13)
74	GND		Ground
75	GND		Ground
76	HSIp(14)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
77	HSIn(14)
78	GND		Ground
79	GND		Ground
80	HSIp(15)	Output	BlueField Card PCIe TX to Carrier Board PCIe RX
81	HSIn(15)
82	GND		Ground

a. From BlueField BF1600 Controller Card Perspective.

PCIe x16 Edge Connector Pinouts Description - Component Side

Pin#	Name	PCIe Description	Description
1	+12v	Input	Power
2	+12v	Input	Power
3	+12v	Input	Power
4	GND		Ground
5	SMCLK	Input	SMBUS_SCL - connected to BlueField SoC SMB2 Inter- face SCL
6	SMDAT	bidirectional	SMBUS_SDA - connected to BlueField SoC SMB2 Inter- face SDA
7	GND		Ground
8	+3.3v	Input	Power
9	JTAG_TRS T#	Input	For testing purposes only. Keep it floating.
10	3.3Vaux	Input	3.3V_AUX
11	WAKE#	NA	Not Connected. Assembly option for on-board CPLD connectivity
Mechanical Key
12	RSVD	NA	For testing purposes only. Keep it floating.
13	GND		Ground
14	HSOp(0)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
15	HSOn(0)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
16	GND		Ground
17	PRSNT#2	NA	Not Connected. Assembly option for on-board CPLD connectivity
18	GND		Ground
19	HSOp(1)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
20	HSOn(1)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
21	GND		Ground
22	GND		Ground
23	HSOp(2)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
24	HSOn(2)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
25	GND		Ground
26	GND		Ground
27	HSOp(3)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
28	HSOn(3)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
29	GND		Ground
30	RSVD	NA	For testing purposes only. Keep it floating.
31	PRSNT#2	NA	For testing purposes only. Keep it floating.
32	GND		Ground
33	HSOp(4)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
34	HSOn(4)
35	GND		Ground
36	GND		Ground
37	HSOp(5)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
38	HSOn(5)
39	GND		Ground
40	GND		Ground
41	HSOp(6)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
42	HSOn(6)
43	GND		Ground
44	GND		Ground
45	HSOp(7)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
46	HSOn(7)
47	GND		Ground
48	PRSNT#2	NA	Not Connected. Assembly option for on-board CPLD connectivity
49	GND		Ground
50	HSOp(8)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
51	HSOn(8)
52	GND		Ground
53	GND		Ground
54	HSOp(9)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
55	HSOn(9)
56	GND		Ground
57	GND		Ground
58	HSOp(10)	Input	BlueField Card PCIE RX to Carrier Board PCIE TX
59	HSOn(10)
60	GND		Ground
61	GND		Ground
62	HSOp(11)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
63	HSOn(11)
64	GND		Ground
65	GND		Ground
66	HSOp(12)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
67	HSOn(12)
68	GND		Ground
69	GND		Ground
70	HSOp(13)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
71	HSOn(13)
72	GND		Ground
73	GND		Ground
74	HSOp(14)	Input	BlueField Card PCIE RX to Carrier Board PCIE TX
75	HSOn(14)
76	GND		Ground
77	GND		Ground
78	HSOp(15)	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
79	HSOn(15)
80	GND		Ground
81	PRSNT#2	Output	PRSNT#2 - Hot plug present detect
82	RSVD	NA	For testing purposes only. Keep it floating.

PCIe Gen 3.0 through Two CABLINE-CA II PLUS Connectors

The BlueField BF1600 Controller Card uses two x8 CABLINE-CA II PLUS connectors (Component Side and Print Side Connectors) according to the PCI Express 3.0 specifications. The below two tables provide the component side pins description and the print side pins description. For further details, please refer to PCIe Gen 3.0 through Two CABLINE-CA II PLUS Interfaces.

CABLINE-CA II PLUS Connector - Component Side

The below table provides pins description of the CABLINE-CA II PLUS connector mounted on the controller’s component side.

Pin #	Pin Name	Pin Direction	Description
1	GND		Ground
2	PCIE_REF- CLK1_P	NA	PCIe Reference Differential Clock. Not Connected (default) PCIe separated clocking default scheme Assembly option to support PCIe shared clocking scheme, then: For system Controller mode, REFCLK will be output For system NIC mode, REFCLK will be input
3	PCIE_REF- CLK1_N	NA
4	GND		Ground
5	HSO_15N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
6	HSO_15P	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
7	GND		Ground
8	HSO_14N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
9	HSO_14P	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
10	GND		Ground
11	HSO_13N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
12	HSO_13P	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
13	GND		Ground
14	HSO_12N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
15	HSO_12P	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
16	GND		Ground
17	HSO_11N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
18	HSO_11P	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
19	GND		Ground
20	HSO_10N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
21	HSO_10P
22	GND		Ground
23	HSO_9N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
24	HSO_9P
25	GND		Ground
26	HSO_8N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
27	HSO_8P
28	GND		Ground
29	HSO_7N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
30	HSO_7P
31	GND		Ground
32	HSO_6N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
33	HSO_6P
34	GND		Ground
35	HSO_5N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
36	HSO_5P
37	GND		Ground
38	HSO_4N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
39	HSO_4P
40	GND		Ground
41	HSO_3N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
42	HSO_3P
43	GND		Ground
44	HSO_2N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
45	HSO_2P
46	GND		Ground
47	HSO_1N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
48	HSO_1P
49	GND		Ground
50	HSO_0N	Input	BlueField Card PCIe RX to Carrier Board PCIe TX
51	HSO_0P
52	GND		Ground
53	I2C_SMDAT	NA	Not Connected. Optional assembly connectivity to BlueField SoC I2C GW4 interface
54	I2C_SMCLK	NA	Not Connected. Optional assembly connectivity to BlueField SoC I2C GW4 interface
55	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
56	S_WAKE1_- CONN_L	NA	Not Connected. Assembly option for on-board CPLD connectivity
57	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
58	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
59	S_PRSNT1_L	Input	Presence Indication. Should be grounded and shorted to IPEX component side pin #59
60	RSVD	NA	Not Connected. Keep it floating.

CABLINE-CA II PLUS Connector - Print Side

The below table provides pins description of the CABLINE-CA II PLUS connector mounted on the con- troller’s print side.

Pin #	Pin Name	Pin Direction	Description
1	RSVD	NA	Not Connected. Optional assembly connectivity to BlueField SoC UART1 TXD
2	RSVD	NA	Not Connected. Optional assembly connectivity to BlueField SoC UART1 RXD
3	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
4	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
5	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
6	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
7	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
8	RSVD	NA	Not Connected. Assembly option for on-board CPLD connectivity
9	GND		Ground
10	HSI_0P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
11	HSI_0N
12	GND		Ground
13	HSI_1P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
14	HSI_1N
15	GND		Ground
16	HSI_2P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
17	HSI_2N
18	GND		Ground
19	HSI_3P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
20	HSI_3N
21	GND		Ground
22	HSI_4P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
23	HSI_4N
24	GND		Ground
25	HSI_5P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
26	HSI_5N
27	GND		Ground
28	HSI_6P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
29	HSI_6N
30	GND		Ground
31	HSI_7P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
32	HSI_7N
33	GND		Ground
34	HSI_8P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
35	HSI_8N
36	GND		Ground
37	HSI_9P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
38	HSI_9N
39	GND		Ground
40	HSI_10P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
41	HSI_10N
42	GND		Ground
43	HSI_11P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
44	HSI_11N
45	GND		Ground
46	HSI_12P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
47	HSI_12N
48	GND		Ground
49	HSI_13P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
50	HSI_13N
51	GND		Ground
52	HSI_14P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
53	HSI_14N
54	GND		Ground
55	HSI_15P	Output	BlueField Card PCIE TX to Carrier Board PCIE RX
56	HSI_15N
57	GND		Ground
58	PERST#	Output	PCIe Interface Reset# for the PCIe interface via the card IPEX connectors For System NIC mode, its direction will turn as input.
59	RSVD	NA	Not Connected. Keep it floating.
60	S_PRSNT2_L	Input	Presence Indication Should be grounded and shorted to IPEX Component Side pin #58.

Power Sequencing

The BF1600 Controller Card requires the +3.3V to come up prior to the +12V at the PCIe connector.

NCSI Management Interface

The below table lists the NCSI Management Interface pins description. For further details, please refer to NCSI Management Interface.

Pin #	Pin Name	Description
1	REF_CLK	Clock reference for receive, transmit, and control interface
2	GND	Connected to Board Ground
3	ARB_IN	Network Controller hardware arbitration Input
4	GND	Connected to Board Ground
5	ARB_OUT	Network Controller hardware arbitration Output
6	GND	Connected to Board Ground
7	RXD0	Receive data
8	GND	Connected to Board Ground
9	RXD1	Receive data
10	GND	Connected to Board Ground
11	CRS_DV	Carrier Sense/Receive Data Valid
12	GND	Connected to Board Ground
13	TXD0	Transmit data
14	GND	Connected to Board Ground
15	TXD1	Transmit data
16	GND	Connected to Board Ground
17	TX_EN	Transmit enable
18	GND	Connected to Board Ground
19	RX_ER	Receive Error, keep float at system side
20	GND	Connected to Board Ground
21	I2C_SDA	Used for testing. Keep float at system side.
22	GND	Connected to Board Ground
23	I2C_SCL	Used for testing. Keep float at system side.
24	GND	Connected to Board Ground
25	GND	Connected to Board Ground
26	GND	Connected to Board Ground
27	3.3V_AUX	Used for testing. Keep float at system side.
28	3.3V_AUX	Used for testing. Keep float at system side.
29	3.3V_AUX	Used for testing. Keep float at system side.
30	3.3V_AUX	Used for testing. Keep float at system side.

External Power Supply Interfaces

The below table lists the External Power Supply pins of the external power supply interfaces on the BF1600 Controller card and PCIe auxiliary card. For further details, please refer to External PCIe Power Supply Interfaces.

Pin #	Signal Name	Description
1	GND	Power Return
2	GND	Power Return
3	GND	Power Return
4	GND	Power Return
5	+12V	ATX Supplied 12V
6	+12V	ATX Supplied 12V
7	+12V	ATX Supplied 12V
8	+12V	ATX Supplied 12V

External +12V Mechanical Pinout Diagram

UART0 Interface

The below table lists the UART0 interface pins from the BlueField Controller Card perspective. For further details, please refer to UART0 Interface.

Warning

The electrical levels of the UART0 interface is CMOS (3.3V)

UART0 Pinouts Description

Pin #	Signal Name
1	Receive
2	Transmit
3	GND

JTAG CoreSight 10 Interface

The below table lists the JTAG CoreSight 10 pins description. For further details, please refer to JTAG CoreSight 10 Interface.

Pin	Signal Name	Voltage Domain	Description
1	VTREF	A	The Voltage Target Reference pin supplies DSTREAM with the debug rail voltage of the target to match its I/O logic levels. VTREF can be tied HIGH on the target. If VTREF is pulled HIGH by a resistor, its value must be no greater than 100Ω.
2	TMS	A	The Test Mode Select pin sets the state of the Test Access Port (TAP) controller on the target. TMS can be pulled HIGH on the target to keep the TAP controller inactive when not in use.
3	GND	NA	Ground.
4	TCK	A	The Test Clock pin clocks data into the TDI and TMS inputs of the target. TCK is typically pulled HIGH on the target.
5	GND	NA	Ground.
6	TDO	A	The Test Data Out pin receives serial data from the target during debugging. You are advised to series terminate TDO close to the target processor. TDO is typically pulled HIGH on the target.
7	KEY (NC)	NA	This pin must not be present on the target connector.
8	TDI	A	The Test Data In pin provides serial data to the target during debugging. TDI can be pulled HIGH on the target.
9	GND	NA	Ground.
10	nSRST	A	The System Reset pin fully resets the target. This signal can be initiated by DSTREAM or by the target board (which is then detected by DSTREAM). nSRST is typically pulled HIGH on the target and pulled strong-LOW to initiate a reset. The polarity and strength of nSRST is configurable.

DDR4 DRAM Memory Interface

The below table lists the DDR4 DRAM pins description. For further details, please refer to DDR4 SODIMM Memory.

Pin Name	Description	Pin Name	Description
A0–A16	SDRAM address bus	SCL	I2C serial bus clock for SPD/TS
BA0, BA1	SDRAM bank select	SDA	I2C serial bus data line for SPD/TS
BG0, BG1	SDRAM bank group select	SA0–SA2	I2C slave address select for SPD/TS
RAS_na	SDRAM row address strobe	PARITY	SDRAM parity input
CAS_nb	SDRAM column address strobe	VDD	SDRAM I/O & core power supply
WE_nc	SDRAM write enable	VPP	SDRAM activating power supply
CS0_n, CS1_n CS2_n, CS3_n	Rank Select Lines	C0, C1	Chip ID lines for 3DS components
CKE0, CKE1	SDRAM clock enable lines	VREFCA	SDRAM command/address reference supply
ODT0, ODT1	SDRAM on-die termination control lines	VSS	Power supply return (ground)
ACT_n	SDRAM activate	VDDSPD	Serial SPD/TS positive power supply
DQ0–DQ63	DIMM memory data bus	ALERT_n	SDRAM ALERT_n
CB0–CB7	DIMM ECC check bits
DQS0_t– DQS8_t	SDRAM data strobes (positive line of differential pair)	RESET_n	Set SDRAMs to a Known State
DQS0_c– DQS8_c	SDRAM data strobes (negative line of differential pair)	EVENT_ n	SPD signals a thermal event has occurred.
DM0_n–DM8_n, DBI0_n-DBI8_n	SDRAM data masks/data bus inversion (x8-based x72 DIMMs)	VTT	Termination supply for the Address, Command and Control bus
CK0_t, CK1_t	SDRAM clocks (positive line of differential pair)	NC	No connection
CK0_c, CK1_c	SDRAM clocks (negative line of differential pair)

RAS_n is a multiplexed function with A16.
SDRAM column address strobe
WE_n is a multiplexed function with A14.

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