Module id register – National Instruments SCXI-1120 User Manual
Page 65
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Register Descriptions
Chapter 4
SCXI-1120 User Manual
4-2
© National Instruments Corporation
Module ID Register
The Module ID Register contains the 4-byte module ID code for the SCXI-1120. This code
number will be read as the first four bytes on the MISO line whenever the module is accessed.
The bytes will appear least significant byte first. Within each byte, data is sent out MSB first.
Additional data transfers will result in all zeros being sent on the MISO line. The Module ID
Register is reinitialized to its original value each time the SCXI-1120 is deselected by the SS*
signal on the backplane.
Type:
Read-only
Word Size:
4-byte
Bit Map:
Byte 0
7
6
5
4
3
2
1
0
0
0
0
0
0
1
0
0
Byte 1
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
Byte 2
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
Byte 3
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
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