25 user input/output register – Rainbow Electronics AT91CAP9S250A User Manual

Page 829

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829

6264A–CAP–21-May-07

AT91CAP9S500A/AT91CAP9S250A

42.5.25

User Input/Output Register

Register Name:

EMAC_USRIO

Access Type:

Read/Write

• RMII

When set, this bit enables the RMII operation mode. When reset, it selects the MII mode.

• CLKEN

When set, this bit enables the transceiver input clock.

Setting this bit to 0 reduces power consumption when the treasurer is not used.

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

–

–

–

–

–

–

15

14

13

12

11

10

9

8

–

–

–

–

–

–

–

–

7

6

5

4

3

2

1

0

–

–

–

–

–

–

CLKEN

RMII

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