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Revision B User Manual
for the VME-SIO4: Board Revision: A
General Standards Corporation
8302A Whitesburg Drive Huntsville, AL 3580, Phone: (256) 880-8787
35
D2 RW
Rx CRC Preset Value
Rx CRC Polynomial
D4 RW
D3 RW
Bit Map
0
0
CRC-CCITT
0
1
CRC-16
1
0
CRC-32
1
1
Reserved
Rx Data Decoding
D7 RW
D6 RW
D5 RW
Bit Map
0
0
0
NRZ
0
0
1
NRZB
0
1
0
NRZI-Mark
0
1
1
NRZI-Space
1
0
0
Biphase-Mark
1
0
1
Biphase-Space
1
1
0
Biphase-Level
1
1
1
Diff. Biphase-Level
3.1.6.19
R
ECEIVE
C
OMMAND
S
TATUS
R
EGISTER
(A
DDRESS
: 10010)
3.1.6.19.1 Low: (Offset Address: 0x48)
D0 RO
Rx Character Available
D1 RW
Rx Overrun
D2 RW
Parity Error/Frame Abort
D3 RO
CRC/Framing Error
D4 RW
Rx CV/EOT/EOF
D5 RW
Rx Break Abort
D6 RW
Rx Idle
D7 RW
Exited Hunt
3.1.6.19.2 High: (Offset Address: 0x4A)
D0 RO
Short Frame/CV Polarity
D1 RO
Residue Code 0
D2 RO
Residue code 1
D3 RO
Residue Code 2
Receive Command
D4 WO
D5 WO
Bit Map
0
0
0
0
Null command
0
0
0
1
Reserved
0
0
1
0
Preset CRC
0
0
1
1
Enter Hunt Mode
0
1
0
0
Reserved
0
1
0
1
Select FIFO Status
0
1
1
0
Select FIFO Interrupt Level
0
1
1
1
Select FIFO Request Level