HP E1368A Manual De Usuario
Appendix B
HP E1368A/69A/70A Registers
Register Definitions
All three Microwave Switch modules are register-based devices. See the
tables below for register definitions.
tables below for register definitions.
Manufacturer ID Register
b + 00
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write
Undefined
Read**
Manufacturer ID
*Returns FFFF
16
= Hewlett-Packard A16 only register-based.
Device Type Register
b + 02
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write
Undefined
Read**
Manufacturer ID
Status/Control Register
b + 04
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write*
Undefined
Read**
Manufacturer ID
B
7F
16
*R = Switch reset to power-on state (all switches open)
**R = Status “ busy” is true low in bit #7 (FF7F
**R = Status “ busy” is true low in bit #7 (FF7F
16
)
Channel Enable Registers
b + 08
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write*
CH04 CH03 CH02 CH01 CH00
Read*
Always Returns FFFF
16
Appendix B
HP E1368A/69A/70A Registers 75