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Appendix B
HP E1366A/E1367A Multiplexer Registers
Register Definitions The HP E1366A and HP E1367A RF multiplexers are register-based slave
devices. Register definitions are:
ID Register
b +00
h
1514131211109876543210
Write Undefined Undefined
Read* Reg-Bas A16 Manufacturer ID
* Returns FFFF
h
=Hewlett-Packard A16 only register-based
Device Type Register
b +02
h
1514131211109876543210
Write Undefined
Read* 1 (A16 only) Module ID Code
* Returns: FF80
h
(E1366A) or FF84
h
(E1367A)
Status/Control Register
b +04
h
1514131211109876543210
Write* Undefined R
Read** FF
h
B7F
h
* R =Multiplexer reset to power-on state (all switches open) ** Status "busy" is low-true in bit #7 (FF7F
h
)
Bank 0 Channel Enable Register
b +08
h
1514131211109876543210
Write* Undefined 03 02 01 00
Read Always returns FFFF
h
* Write "1" closes channel, write "0" opens channel
Bank 1 Channel Enable Registers
b +0A
h
1514131211109876543210
Write* Undefined 13 12 11 10
Appendix B HP E1366A/E1367A Multiplexer Registers 65