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The Device Type
Register
Address
base + 02
Appendix C
Device Classification. Bits 15 and 14 classify a device as one of the
following:
0 0
memory device
0 1
extended device
1 0
message-based device
1 1
register-based device
The HP E1340 Arbitrary Function Generator is a register-based device.
Addressing Mode. Bits 13 and 12 indicate the addressing mode used by the
device:
0 0
A16/A24 address mode
0 1
A16/A32 address mode
1 0
RESERVED
1 1
A16 address mode
The HP E1340 AFG uses the A16 address mode.
Manufacturer ID. Bits 11 through 0 identify the manufacturer of the
device. Hewlett-Packard's ID number is 4095, which corresponds to
bits 11 - 0 being set to " 1" .
Given the device classification, addressing space, and manufacturer of the
HP E1340 AFG, reading the ID register returns FFFF
The Device Type Register contains a model code which identifies the
device.
15
14
13
12
16
Model Code. The model code of the HP E1340 AFG is FFA0
11
10
9
8
7
Model Code
HP E1340A Register-Based Programming 235
.
16
6
5
4
3
2
.
16
1
0
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