PCI-SIO4 User Manual
General Standards Corporation
8302A Whitesburg Drive Huntsville, AL 35802, Phone: (256) 880-8787
28
11
/TxC Pin
D6..7
CTR1 Clock Source (encoded as follows):
00
Disabled
01
Disabled
10
/RxC Pin
11
/TxC Pin
2.3.10 H
ARDWARE
C
ONFIGURATION
R
EGISTER
(HCR)
2.3.10.1
Low: (LOC 0xn12)
D1
RW
BRG0 Enable
D0
RW
BRG0 Single Cycle/Continuous
D2..3
Rx ACK Pin Control (encoded as follows):
00
3 - State Output
01
Rx Acknowledge Input
10
Output 0
11
Output 1
D5
RW
BRG1 Enable
D4
RW
BRG1 Single Cycle/Continuous
D6..7
Tx ACK Pin Control (encoded as follows):
00
3 - State Output
01
Tx Acknowledge Input
10
Output 0
11
Output 1
2.3.10.2
High: (LOC 0xn13)
D0..D1
DPLL Mode (encoded as follows):
00
Disabled
01
NRZ/NRZI
10
Biphase-Mark/Space
11
Biphase-Level
D2..D3
DPLL Clock Rate (encoded as follows):
00
32x Clock Mode
01
16x Clock Mode
10
8x Clock Mode
11
Reserved
D4
RW
Accept Code Violations
D5
RW
CTR1 Rate Match DPLL/CTR0
D6..7
CTR0 Clock Rate (encoded as follows):
00
32x Clock Mode
01
16x Clock Mode
10
8x Clock Mode
11
4x Clock Mode
2.3.11
I
NTERRUPT
V
ECTOR
R
EGISTER
(IVR)
2.3.11.1
Low: (LOC 0xn14)
D1..3
RW
IV 7..0