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Chapter 3
Register Map and Descriptions — DAC0 Direct Data Register
©
National Instruments Corporation
3-19
DAC0 Direct Data Register
The DAC0 Direct Data Register loads the desired data directly into DAC0, without using the
DAC data FIFO.
Address:
Base a 18 (hex)
Type:
Write-only
Word Size:
16-bit
Bit Map:
Bit
Name
Description
15–12
D<15..12>
Reserved—Always write 0 to these bits (except
AT-MIO-16XE-10 and AT-AI-16XE-10).
11–0
D<11..0>
Data bits 11 through 0—The 12-bit data to be written to
DAC data FIFO. This data is interpreted in straight binary
form when DAC0 is configured for unipolar operation.
When DAC0 is configured for bipolar operation, the data
is interpreted in two’s complement form (except
AT-MIO-16XE-10 and AT-AI-16XE-10).
15–0
D<15..0>
Data bits 15 through 0—The 16-bit data to be written to
DAC data FIFO. This data is interpreted in straight binary
form when DAC0 is configured for unipolar operation.
When DAC0 is configured for bipolar operation, the data
is interpreted in two’s complement form
(AT-MIO-16XE-10 and AT-AI-16XE-10 only).
15
14
13
12
11
10
9
8
D15
D14
D13
D12
D11
D10
D9
D8
7
6
5
4
3
2
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Summary of Contents for AT-AI-16XE-10
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