CM Baseplate Connectors 209
Appendix A Pin-Outs for Cables and Connectors
AUI 10 Megabit Ethernet MAU Connectors
MII Ethernet MAU Connectors
DB15
Pin
Signal Direction Function
1 Ground —
2 CI+ In Transmit data –
3 DO+ Out Data output +
4 Ground —
5 DI+ In Data input +
6 Ground — Receive data –
7NC —
8 Ground In MAU present detect
9 CI– In Collision input –
10 DO– Out Data output –
11 Ground —
12 DI– In Data input –
13 +12 V Out MAU power –
14 Ground —
15 NC —
2
1
3
11
4
12
5
13
6
14
7
15
8
1
9
Shield
Slide Clip
DB40
Pin
Signal Direction Function
1 +5 V Out MII MAU power
2 MDIO In/Out Management data
3 MDC Out Management data clock
4 RxD<3> In Receive data 3
5 RxD<2> In Receive data 2
6 RxD<1> In Receive data 1
7 RxD<0> In Receive data 0
8 Rx DV In Receive data valid
Shield
1
21
20 4