3 ssc receive clock mode register – Rainbow Electronics AT91CAP9S250A User Manual
Page 597
597
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
36.8.3
SSC Receive Clock Mode Register
Name:
SSC_RCMR
Access Type:
Read/Write
• CKS: Receive Clock Selection
• CKO: Receive Clock Output Mode Selection
• CKI: Receive Clock Inversion
0: The data inputs (Data and Frame Sync signals) are sampled on Receive Clock falling edge. The Frame Sync signal out-
put is shifted out on Receive Clock rising edge.
1: The data inputs (Data and Frame Sync signals) are sampled on Receive Clock rising edge. The Frame Sync signal out-
put is shifted out on Receive Clock falling edge.
CKI affects only the Receive Clock and not the output clock signal.
31
30
29
28
27
26
25
24
PERIOD
23
22
21
20
19
18
17
16
STDDLY
15
14
13
12
11
10
9
8
–
–
–
STOP
START
7
6
5
4
3
2
1
0
CKG
CKI
CKO
CKS
CKS
Selected Receive Clock
0x0
Divided Clock
0x1
TK Clock signal
0x2
RK pin
0x3
Reserved
CKO
Receive Clock Output Mode
RK Pin
0x0
None
Input-only
0x1
Continuous Receive Clock
Output
0x2
Receive Clock only during data transfers
Output
0x3-0x7
Reserved