Media Independent Interface (MII) 40 pin

01 Mar 1998

Image:connector_dsubhi40f.png 40 pin hi-density D-SUB female connector at the network device.

Image:connector_dsubhi40m.png 40 pin hi-density D-SUB male connector at the transciever.

Pin	Name	Dir	Description
1	V	-	+5 Vdc/ 3.3 Vdc
2	MDIO	IN/OUT	Management Data I/O
3	MDC	OUT	Management Data Clock
4	RxD	IN	Rx Data
5	RxD	IN	Rx Data
6	RxD	IN	Rx Data
7	RxD	IN	Rx Data
8	Rx_DV	IN	Rx Data Valid
9	Rx_CLK	IN	Rx Clock
10	Rx_ER	IN	Rx Error
11	Tx_ER	OUT	Tx Error
12	Tx_CLK	IN	Tx Clock
13	Tx_EN	OUT	Tx Enable
14	TxD	OUT	Tx Data
15	TxD	OUT	Tx Data
16	TxD	OUT	Tx Data
17	TxD	OUT	Tx Data
18	COL	IN	Collision
19	CRS	IN	Carrier Sense
20	V	-	+5 Vdc/ +3.3 Vdc
21	V	-	+5 Vdc/ +3.3 Vdc
22	GND	-	Ground
23	GND	-	Ground
24	GND	-	Ground
25	GND	-	Ground
26	GND	-	Ground
27	GND	-	Ground
28	GND	-	Ground
29	GND	-	Ground
30	GND	-	Ground
31	GND	-	Ground
32	GND	-	Ground
33	GND	-	Ground
34	GND	-	Ground
35	GND	-	Ground
36	GND	-	Ground
37	GND	-	Ground
38	GND	-	Ground
39	GND	-	Ground
40	V	-	+5 Vdc/ +3.3 Vdc

References