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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
38
D2 RW
Tx CRC Preset Value
D1 RW
Tx CRC Enable
D0 RW
Tx CRC on EOF/EOM
Polynomial Tx CRC
D4 RW
D3 RW
Bit Map
0
0
CRC-CCITT
0
1
CRC-16
1
0
CRC-32
1
1
Reserved
Tx Data Encoding
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
3.1.6.26 T
RANSMIT
C
OMMAND
/S
TATUS
R
EGISTER
(A
DDRESS
: 11010)
3.1.6.26.1 Low: (Offset Address: 0x68)
D0 RO
Tx Buffer Empty
D1 RW
Tx Underrun
D2 RO
All Sent
D3 RW
Tx CRC Sent
D4 RW
Tx EOF/EOT Sent
D5 RW
Tx Abort Sent
D6 RW
Tx Idle Sent
D7 RW
Tx Preamble Sent
3.1.6.26.2 High: (Offset Address: 0x6A)
Tx Idle Line Condition
D2 RW
D1 RW
D0 RW
Bit Map
0
0
0
SYNC/Flag/Normal
0
0
1
Alternating 1 & 0
0
1
0
All Zeros
0
1
1
All Ones
1
0
0
Reserved
1
0
1
Alternating Mark & Space
1
1
0
Space
1
1
1
Mark
D3 RW
Tx Wait on Underrun