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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
22
3.1.6.1.2 High WO: (Offset Address: 0x02)
Mode Control
D0
WO
0 Normal Operation
1 Auto Echo
0 External Local Loop-back
1 Internal Local Loop-back
D1 WO
0 Normal Operation
0 Auto Echo
1 External Local Loop-back
1 Internal Local Loop-back
D2 WO
Channel Reset
Channel Command WO
D7
D6
D5
D4
D3
Bit Map
0
0
0
0
0
Null Command
0
0
0
0
1
Reserved
0
0
0
1
0
Reset Highest IUS
0
0
0
1
1
Reserved
0
0
1
0
0
Trigger Channel Load DMA
0
0
1
0
1
Trigger Rx DMA
0
0
1
1
0
Trigger Tx DMA
0
0
1
1
1
Trigger Rx & Tx DMA
0
1
0
0
0
Reserved
0
1
0
0
1
Rx FIFO Purge
0
1
0
1
0
Tx FIFO Purge
0
1
0
1
1
Rx & Tx FIFO Purge
0
1
1
0
0
Reserved
0
1
1
0
1
Load Rx Character Count
0
1
1
1
0
Load Tx Character Count
0
1
1
1
1
Load RX & Tx Character Count
1
0
0
0
0
Reserved
1
0
0
0
1
Load TCO
1
0
0
1
0
Load TC1
1
0
0
1
1
Load TC0 & TC1
1
0
1
0
0
Select Serial Data LSB First *
1
0
1
0
1
Select Serial Data MSB First
1
0
1
1
0
Select Straight Memory Data *
1
0
1
1
1
Select Swapped Memory Data
1
1
0
0
0
Reserved
1
1
0
0
1
Rx Purge
1
1
0
1
0
Reserved
1
1
0
1
1
Reserved
1
1
1
0
1
Reserved
1
1
1
0
1
Reserved
1
1
1
1
0
Reserved
1
1
1
1
1
Reserved
*
Selected upon reset
3.1.6.2 C
HANNEL
M
ODE
R
EGISTER
(A
DDRESS
: 00001)