Measurement Computing PCM-DAC02 - Manual (Page 13)

WRITE: Same as base + 0 but for second DAC, DAC1.
READ: No function
D/A0 D/A1 D/A2 D/A3 D/A4 D/A5 D/A6 D/A7
0 1 2 3 4 5 6 7
BASE + 3 - DAC1 MSB (4 bits)
WRITE: Same as base + 1 but for second DAC, DAC1. Updates DAC1.
READ: No function
D/A8 D/A9 D/A10 D/A11 X X X X
0 1 2 3 4 5 6 7
BASE + 4 - Digital I/O (8 bits)
WRITE: Updates output of DIO bits set for output.
READ: Reads current status of DIO bits set for input. Reads back output state of
DIO bits set for output.
DIO0 DIO1 DIO2 DIO3 DIO4 DIO5 DIO6 DIO7
0 1 2 3 4 5 6 7
BASE + 5 - Calibration Data Load Register
WRITE: Load bit for calibration DAC, which is serial load.
READ: Writes contents of DATA into the DAC8800.
DATA X X X X X X X
0 1 2 3 4 5 6 7
For a complete technical description of the calibration procedure please fax your
request to Measurement Computing Corp., attention of the Engineering Manager. The
details of this procedure are available to any software developer desiring to add a
calibration routine for the PCM-DAC02.
BASE + 6 - Control & Status Register
WRITE: Loads various control bits, explained below.
DAC1R0 DAC1R1 DAC0R0 DAC0R1 LDIR UDIR INT_EN X
0 1 2 3 4 5 6 7
READ: Reads status of various control bits, explained below.
DAC1R0 DAC1R1 DAC0R0 DAC0R1 LDIO UDIO INT_EN EXT_INT
0 1 2 3 4 5 6 7
Set DAC Output Range DAC#R1 DAC#R0
±5V 0 0
±10V 0 1
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