500-003111-000
4-1
SECTION 4
PROGRAMMING
4.1 INTRODUCTION
TO
CONTROLLING
THE
VMIVME-3111
BOARD
Communication with the VMIVME-3111 Analog-to-Digital Converter (ADC)
Board takes place through sixteen contiguous 16-bit register locations which are
mapped into the VME short I/O address space. Table 4.1-1 summarizes the
functions of the communication registers which are discussed in detail in the
following sections.
RELATIVE
HEX
ADDRESS*
DEC
REGISTER NAME
ACTIVE
BITS
ACCESS MODE
00
02
04
06
08
0A
0C
0E
10
12-16
18
1A-1E
00
02
04
06
08
10
12
14
16
18-22
24
26-30
BOARD IDENTIFICATION
CONTROL AND STATUS
OUTPUT D/A CHAN 00
OUTPUT D/A CHAN 01
AUTOZERO D/A CONV
AUTOGAIN D/A CONV
A/D CONVERTER DATA
PGA GAIN SELECTION
INTERRUPT CONTROL
(RESERVED)
INTERRUPT VECTOR
(RESERVED)
D08-D15
D00-D15
D00-D11
D00-D11
D00-D11
D00-D11
D00-D11
D00-D01
D00-D07
D00-D07
READ
READ/WRITE
WRITE
WRITE
WRITE
WRITE
READ
WRITE
READ/WRITE
READ/WRITE
Table 4.1-1. Communications Register Map
*REGISTER ADDRESS is the sum of the RELATIVE ADDRESS and the BOARD ADDRESS.
M3111/T4.1-1
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