CoaXPress-over-Fiber QSFP28 Connector

Connector description

Property	Value
Name, Label	QSFP28
Type	QSFP+ 28Gb/s 4X Pluggable Transceiver port
Location	Card bracket
Usage	CoaXPress-over-Fiber Host Interface

Pin assignments

Pin	Signal	Usage
1	GND	Ground
2	Tx2n	Transmitter B inverted data
3	Tx2p	Transmitter B non-inverted data
4	GND	Ground
5	Tx4n	Transmitter D inverted data
6	Tx4p	Transmitter D non-inverted data
7	GND	Ground
8	ModSel	Module select
9	Reset	Module reset
10	Vcc-Rx	+3.3 V receiver power supply
11	SCL	Two-wire serial interface clock
12	SDA	Two-wire serial interface data
13	GND	Ground
14	Rx3p	Receiver C non-inverted data
15	Rx3n	Receiver C inverted data
16	GND	Ground
17	Rx1p	Receiver A non-inverted data
18	Rx1n	Receiver A inverted data
19	GND	Ground
20	GND	Ground
21	Rx2n	Receiver B inverted data
22	Rx2p	Receiver B non-inverted data
23	GND	Ground
24	Rx4n	Receiver D inverted data
25	Rx4p	Receiver D non-inverted data
26	GND	Ground
27	ModPrs	Module present
28	IntRxLOS	Interrupt
29	Vcc-Tx	+3.3 V transmitter power supply
30	Vcc1	+3.3 V power supply
31	LPMode/TxDis	Low power mode
32	GND	Ground
33	Tx3p	Transmitter C non-inverted data
34	Tx3n	Transmitter C inverted data
35	GND	Ground
36	Tx1p	Transmitter A non-inverted data
37	Tx1n	Transmitter A inverted data
38	GND	Ground