Status register 2, Status register 2 -30 – National Instruments AT-MIO-16X User Manual
Page 126
Chapter 4
Register Map and Descriptions
AT-MIO-16X User Manual
4-30
© National Instruments Corporation
Status Register 2
Status Register 2 contains 1 bit of AT-MIO-16X hardware status
information for monitoring the status of the A/D conversion.
Address:
Base address + 1A (hex)
Type:
Read-only
Word Size:
1-bit
Bit Map:
Bit
Name
Description
15-1
X
Don’t care bits.
0
ADC_BUSY*
ADC BUSY—This bit indicates the
status of the A/D converter on the
AT-MIO-16X during a conversion or
calibration process. The A/D converter
on the AT-MIO-16X can calibrate its
internal circuitry on command by
strobing the ADC Calibration Register.
If ADC_BUSY* is clear, an ADC
conversion or calibration operation is
currently in progress. If ADC_BUSY* is
set, no ADC conversion or calibration
operation is in progress. An ADC
calibration cycle takes approximately
1.25 sec. During this time, the ADC is
busy as reflected by the ADC_BUSY*
status, and cannot be used.
7
6
5
X
4
3
X
2
X
1
0
X
X
X
ADC_BUSY*
X
15
MSB
LSB
14
13
X
12
11
X
10
X
9
8
X
X
X
X
X