Xycom XVME-560 Manual page 28

XVME-560 Manual
September, 1984
3.1 INTRODUCTION
This chapter provides the information required to program the AIN,
data and perform calibration. This information is presented in the following fashion:
Discussion of base addressing and I/O module address space
l
Presentation of module address map showing programming locations
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Programming operating modes
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Selection of channel and gain
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Reading data
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Interrupts
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Calibration
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3.2 BASE ADDRESSING
operates as an I/O module in VMEbus systems
The
AIN
64K VMEbus Short
Addresses at 1K intervals within this address space.
the switches
described in Section 2.4.1.
When located at its base address, the
space for its own
Interface Block, and contains all of the module's programming locations. Figure 3-1
shows the AIN's I/O Interface Block and its relation to the Short I/O Address space.
When a host processor is addressing locations in the I/O Interface Block, the location's
address is added to the module's base address.
For example, if the AIN is located at Short I/O Base Address XXO4OOH,
the Control/Status register is XX0481H
PROGRAMMING
I/O Address Space. It can be located at any one of 64 Base
This 1K block of short I/O address space is termed the
use.
Chapter 3
The
alloted a 1K block of short I/O address
AIN is
3-1
access conversion
is
and therefore located in
base selected via
address is
the address of
the
I/O