Table of Contents
Advertisement
The Query
Response Register
Address
base + 08
The WRITE
Registers
The Control
Register
Address
base + 04
Appendix C
When the AFG's configuration (e.g. function, frequency, ) is queried, the
response is sent to the Query Response Register.
15 - 8
not used
16
Query Response. The response returned to the register is the contents of an
AFG memory location containing information about the queried parameter.
Responses are 16-bits, of which only the lower eight bits are used. See the
" Example Programs" section for more information.
The following WRITE registers are located on the AFG.
Control Register (base + 04
Command Register (base + 08
Parameter Register (base + 0A
Input Data Register (base + 0C
Examples and program statements in this appendix use 16-bit writes. Except
for the Input Data Register, the WRITE registers only use the lower eight
bits.
The Control Register is used to perform a hardware reset of the AFG and to
disable the AFG from driving the SYSFAIL line.
15 - 8
Not Used
16
Resetting the AFG. Writing a one (1) to bit 0 (hardware) resets the AFG.
Writing a zero (0) turns the reset function off. Bit 0 must be a "1" for at least
2 s for the reset to occur. If bit 0 remains a 1, the AFG continually resets.
Inhibiting SYSFAIL. Writing a one (1) to bit 1 prevents the AFG from
driving the SYSFAIL line. Writing a zero (0) allows the AFG to drive
SYSFAIL during a reset.
Every program (except "Querying AFG Parameters") in the " Programming
Examples" section begins by resetting the AFG.
7
6
5
Query Response
)
16
16
16
7
6
5
X
X
X
HP E1340A Register-Based Programming 237
4
3
2
)
)
)
16
4
3
2
X
X
X
SYSFAIL
1
0
1
0
Reset
Inhibit
Advertisement
Table of Contents
