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Agilent E8794A Custom Card Register Definitions
Bits
Write
Reset
E6198B Switch/Load Unit User Manual
Card Type (R) Base + 0
The Custom Card always returns a card type of 20
Bits
7
Read
0
Configuration (R) Base + 1
Configuration registers are programmable by the user and may
be used to identify what version of custom card is installed.
Default is pull high (return FF
configuration.
Bits
7
Read
C
Control register (W) Base + 2
Writing a 1 to bit seven generates a reset pulse (duration ~ 250
nS) which you can use to reset on-board circuitry. The reset
pulse is self-clearing.
7
6
5
Not Used
Not Used
Digital Input (R) Base + 3
Digital Input is a direct read-back of the logic state present on
custom card input lines ccSpare_DigIn[0]- ccSpare_DigIn[7].
Bits
Read
h
6
5
4
3
2
1
0
0
1
0
1
0
h
6
5
4
3
C
C
C
C
7
6
5
4
3
h
4
3
Not Used
Not Used
h
7
6
5
Din
Din
Din
7
6
5
Register Definitions
10
0
0
). Use switch S201 to set value
h
2
1
0
C
C
C
2
1
0
2
1
Not Used
Not Used
4
3
2
1
Din
Din
Din
Din
4
3
2
B
(14
).
h
0
Not Used
0
Din
1
0
B-83
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