PCI-SIO4 User Manual
General Standards Corporation
8302A Whitesburg Drive Huntsville, AL 35802, Phone: (256) 880-8787
27
2.3.9
C
LOCK
M
ODE
C
ONTROL
R
EGISTER
(CMCR)
2.3.9.1
Low: (LOC 0xn10)
D0..2
RW
Receive Clock Source (encoded as follows):
000
Disabled
001
/RxC Pin
010
/TxC Pin
011
DPLL Output
100
BRG0 Output
101
BRG1 Output
110
CTR0 Output
111
CTR1 Output
D3..5
RW
Transmit Clock Source (encoded as follows):
000
Disabled
001
/RxC Pin
010
/TxC Pin
011
DPLL Output
100
BRG0 Output
101
BRG1 Output
110
CTR0 Output
111
CTR1 Output
D6..7
RW
DPLL Clock Source (encoded as follows):
00
BRG0 Output
01
BRG1 Output
10
/RxC Pin
11
/TxC Pin
2.3.9.2
High: (LOC 0xn11)
D0..1
BRG0 Clock Source (encoded as follows):
00
CTR0 Output
01
CTR1 Output
10
/RxC Pin
11
/TxC Pin
D2..3
BRG1 Clock Source (encoded as follows):
00
CTR0 Output
01
CTR1 Output
10
/RxC Pin
11
/TxC Pin
D4..5
CRT0 Clock Source (encoded as follows):
00
BRG0 Output
01
BRG1 Output
10
/RxC Pin