Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK データシート
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製品コード
AT91SAM9X25-EK
1069
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
45.6.25 User Input/Output Register
Name:
EMAC_USRIO
Address:
0xF802C0C0
Access:
Read-write
• RMII: Reduced MII
When set, this bit enables the RMII operation mode. When reset, it selects the MII mode.
• CLKEN: Clock Enable
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