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NXP Semiconductors
PT2001SWUG
PT2001 programming guide and instruction set
PT2001SWUG
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© NXP B.V. 2019. All rights reserved.
User guide
Rev. 3.0 — 29 April 2019
86 / 153
rdspi
Description:
Requests an SPI backdoor read.
The address must previously be defined in the SPI address register spi_add.
The rdspi instruction requires 2 ck cycle to complete operation. The SPI address register
must not be changed on the following instruction, otherwise the operation fails and the
read data is dummy.
Assembler syntax:
rdspi;
Table 74. rdspi instruction format
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
1
1
0
1
0
1
0
1
0
0
0
0
0
0