PROGRAMMER GUIDE
Copyright 2001
C-1
DAC128V HARDWARE REFERENCE
C.1 Overview
This section of the manual describes the operation of the DAC128V from the software
perspective, detailing the DAC128V registers and providing programming examples. A
more detailed description of the hardware can be found in Chapter 2, PRODUCT
OVERVIEW, and in appendix B, TYPICAL APPLICATIONS.
C.2 Description
The DAC128V is a simple to use IP Module card with 8 channels of 12-bit digital to
analog converters. The output ranges can be selected via a jumper for each group of four
channels. Eight data registers, one per channel, set the output voltage for the channel. On
power-up all data registers are set to ‘0x0800’ (all channels at mid-range
).
C.3 IP Module ID PROM Listing
Emulating the ID PROM function is possible due to the never-changing information it
presents. It saves space, lowers costs, improves reliability, and enables this IP Module to
provide “no-wait” read accesses of this information.
.
NOTE
: The ID address space is fully decoded. Any attempt to access IPA
addresses at and above IPA = 0x0C, or any attempt to write to ID space (if a carrier
supports such a transfer) will result in no acknowledgment, and its subsequent bus
time-out error on the carrier upon which this IP Module resides.
The IP Module ID data is presented only on byte-lane #0 (IPD[7:0]). The upper byte-
lane #1 (IPD[15:8]) reads as all zeroes during valid ID read-only accesses.
Table C-1 is the DAC128V emulated ID Address Space PROM listing.
Table C-1 DAC128V ID Address Space Listing
IP Module
Address
Description Data
Read
IPA = 0x00
ASCII “I”
0x49
IPA = 0x01
ASCII “P”
0x50
IPA = 0x02
ASCII “A”
0x41
IPA = 0x03
ASCII “C”
0x43
IPA = 0x04
SYSTRAN’s ID
0x45
IPA = 0x05
DAC128V’s Model Number
0x69
IPA = 0x06
Revision Level
0x30
IPA = 0x07
Reserved
0x00
IPA = 0x08
Low Byte Driver ID
0x00
IPA = 0x09
High Byte Driver ID
0x00
IPA = 0x0A
Number of Bytes Used
0x0C
IPA = 0x0B
CRC
0xE8
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Summary of Contents for DAC128V
Page 3: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 37: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 41: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 47: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 55: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Page 59: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...