Register Descriptions
Chapter 4
SCXI-1100 User Manual
4-2
© National Instruments Corporation
Module ID Register
The Module ID Register contains the 4-byte module ID code for the SCXI-1100. Whenever the
module is accessed, the module ID code number is read as the first four bytes on the MISO line.
The bytes appear least significant byte first. Within each byte, data is sent out MSB first.
Additional data transfers result in all zeros being sent on the MISO line. The Module ID
Register is reinitialized to its original value each time the SCXI-1100 is deselected by the SS*
signal on the backplane.
Type:
Read-only
Word Size:
Four-byte
Bit Map:
Byte 0
7
6
5
4
3
2
1
0
0
0
0
0
0
1
1
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
