Dac1 Direct Data Register - National Instruments PCI E Series Programmer's Manual

Chapter 3 Register Map and Descriptions

DAC1 Direct Data Register

The DAC1 Direct Data Register loads the desired data directly into DAC1, without using the
DAC data FIFO.
Address:
Type:
Word Size:
Bit Map:
15 14
D15 D14
7 6
D7 D6
Bit
15–0
PCI E Series RLPM
Base address + 1A (hex)
Write-only
16-bit
13 12
D13 D12
5 4
D5 D4
Name Description
D<15..0> Data bits 15 through 0—The data to be written directly
to DAC1. This data is interpreted in straight binary form
when DAC1 is configured for unipolar operation. In
unipolar mode, the valid range is 0 to 65,536 for a 16-bit
DAC and 0 to 4,096 for a 12-bit DAC. When DAC1 is
configured for bipolar operation, the data is interpreted in
two's complement form. In bipolar mode, the valid range
is –32,768 to 32,767 for a 16-bit DAC and –2,048 to 2,047
for a 12-bit DAC.
11 10
D11 D10
3 2
D3 D2
3-20
9
D9 D8
1
D1 D0
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