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Register Bit Descriptions
This section contains a description of the function of each bit which is
addressable in each register. The bits are listed according to the title of the
WRITE bit name, with the READ definition at the end of the description.
For registers 00
16
and 02
16
, the bits are listed according to the title of the
READ definition.
Manufacturer ID
Register
The 16-Channel FET Multiplexer Module always returns FFFF
16
on a
Manufacturer ID Register READ.
base + 00
16
1514131211109876543210
Write Undefined
Read 1111111111111111
Device Class There are four classifications. The FET Multiplexer Module is a
register-based device (11).
Address Space The FET Multiplexer Module uses A16 address mode.
Manufacturer ID Hewlett-Packard’s identification number is 4095, which corresponds to bits
11 - 0 all set to 1.
Device Type
Register
The Device Type Register contains a model code which identifies the
module.
base + 02
16
1514131211109876543210
Write Undefined
Read Model Code
Model Code Model Code. The following model codes identify the HP E1351A FET
Multiplexer and HP E1353A Thermocouple FET Multiplexer:
FF10
16
HP E1351A 16-Channel FET Multiplexer
FF12
16
HP E1353A 16-Channel Thermocouple FET Multiplexer
86 HP E1351A/53A Register-Based Programming Appendix B