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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
15
3.1
REGISTER BIT MAPS
All Reserved bits should be set to
0
for future compatibility. Also, the value read from a reserved bit will be
indeterminate.
3.1.1
BOARD CONTROL/STATUS REGISTERS:
3.1.1.1 Board ID Register:
D0..D16
Reads back hex CEAC
3.1.1.2 Device Type Register:
D0..D16
Reads back hex F4E4
3.1.1.3 Board Control Register:
D0
Board Reset L (pulsed)
1
will generate a self-timed pulse that will reset the board.
(There is no need for the software to return to clear this bit)
0
will not generate a self-timed pulse that will reset the board
(There is no need for the software to return to clear this bit)
D1
Enable Interrupts
1
will enable this board to generate VME interrupts.
0
will disable the board from generating VME interrupts.
D2..3
Reserved
D4
Spare LED On (A software controlled bit.)
1
will turn
off
the Fail LED
0
will turn
on
the Fail LED
D5..6
Reserved
D7
Fail LED On L (A software controlled bit.)
1
will turn
off
the Fail LED
0
will turn
on
the Fail LED.
D8..D15
Reserved
3.1.1.4 Board Status Register:
D0..D15
Reserved
3.1.2
I/O CONTROL REGISTERS:
3.1.2.1 Channel 0 Control Register: (same format for Channels 1..3 Control Registers)
D0
Reset Tx Buffer (pulsed)
1
will generate a self-timed pulse that will reset the Tx Buffer.
(There is no need for the software to return to clear this bit)
D1
Reset Rx Buffer (pulsed)
1
will generate a self-timed pulse that will reset the Rx Buffer.
(There is no need for the software to return to clear this bit)
D2
Enable interrupts for channel number.
1
will enable this board to generate interrupts for this channel number.
0
will disable the board from generating interrupts for this channel number.
D3
Reserved