Description Register
Base + 1C
16
Read only, returns FA60
16
: The Description Register returns more
information on identification and functionality of the HP E1413. Note that
the Send Data, Send Count, and Send Status Registers correspond to the
FIFO MSW, FIFO LSW, FIFO Reading Count, and FIFO Status Registers.
Address
15 - 14 13 - 11 10 - 8
7
6
5
4
3
2
1
0
Base + 1C
16
Rev
Sub
Type
Mod
Type
0
A16
VME Slave
Send
VME Slave
Rec
VME Mast
Send
VME Mast
Rec
LBUS
Send
LBUS
Rec
Rev: All ones indicates the current revision of the module.
Sub Type: all bits always set to ones (1).
Mod Type: The Mod Type indicates the following:
Bit 10
Bit 9
Bit 8
Meaning
0
1
1
Signal Acquisition/Conditioning Front Ends
0
1
0
Analog/Interval to Digital Conversion
1
1
0
Data Storage
1
1
0
Data Processing
1
0
0
Digital to Analog Conversion
1
0
1
Signal Distribution/Enhancement Rear Ends
0
0
0
Reserved
0
0
1
Other
A16: A one (1) indicates that the Virtual Instrument Basic Registers, (Send
Data, Send Count, Send Status, Receive Data, Receive Count, and Receive
Status), are in the A16 address space. A zero (0) indicates that these registers
are in A24 or A32 address space starting a address offset 8
16
. The Send Data,
Send Count, and Send Status Registers are the FIFO MSW and LSW Registers,
FIFO Reading Count, and FIFO Status Registers respectively.
VME Slave Send: A one (1) indicates that the device has the capability to
send data via its VMEbus slave registers, and implements both the Send
Data and Send Status Registers. A zero indicates that this capability is
absent on this device.
VME Slave Rec: A one (1) indicates that the device has the capability to
receive data via its VMEbus slave registers, and implements both the
Receive Data and Receive Status Registers. A zero indicates that this
capability is absent on this device.
VME Mast Send: A one (1) indicates that the device is a VMEbus master
having the capability to send data to another Virtual Instrument device’s Receive
Data Register. A zero indicates that this capability is absent on this device.
350 Register-Based Programming
Appendix D
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