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D12:11 USC_DCD Direction Setup
Defines the DCD direction for the USC DCD pin.
Notes:
D12
D11
0
0
0
1
1
0
1
1
D10:9 USC_CTS Direction Setup
Defines the CTS direction for the USC CTS pin.
Notes:
D10
D9
0
0
0
1
1
0
1
1
D8:6
Cable TxC Source
Defines the Clock Source for the TxC signal to the IO connector.
D8
D7
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
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If DCD is used as GPIO, set this field to '00' and set Pin Source Register
D16:D15 for output / Pin Status Register D3 for input.
If set, the DCD direction must agree with the USC DCD setup (USC IOCR
D13:12) to ensure proper operation.
If field set to '11' (Output), DCD Source field (D16:15) must be set to '00'.
DCD Buffer Direction
Buffer Disabled
Input from IO Connector - DCD
Reserved
Output to IO Connector
If CTS is used as GPIO, set this field to '00' and set Pin Source Register
D14:D13 for output / Pin Status Register D2 for input.
If set, the CTS direction must agree with the USC CTS setup (USC IOCR
D15:14) to ensure proper operation.
If field set to '11' (Output), RTS Source field (D14:13) must be set to '00'.
CTS Buffer Direction
Tristate
Input from IO Connector – CTS
Reserved
Output to IO Connector
D6
0
1
0
1
0
1
0
1
PC104P-SIO4BX User Manual, Revision: 0
General Standards Corporation
USC IOCR D13:D12 Setup
XX (Don't Care)
0X (Input)
XX (Don't Care)
1X (Output)
USC IOCR D15:D14 Setup
XX (Don't Care)
0X (Input)
XX (Don't Care)
1X (Output)
TxC Source
Prog Clock
Inverted Prog Clock
'0' (Drive Line Lo)
'1' (Drive Line Hi)
USC_TxC
USC_RxC
Cable RxC Input
Cable RxAuxC Input
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