DLPU041G April 2016 – July 2024 DLPC230-Q1 , DLPC230S-Q1
The HOST-SPI-MODE signal is used by the boot application during system power-up to determine what SPI mode (clock polarity and phase) is to be used for Host SPI communications. After the value of this signal is read by the boot application, it is configured as an output and toggled during stages of software initialization for debug usage. This debug usage is described in Section 2.1.4.1.
VALUE AT SYSTEM POWER-UP | SYSTEM ACTION |
---|---|
0 | Host SPI port may use SPI mode 0 or 3 |
1 | Host SPI port may use SPI mode 1 or 2 |
The SPI modes are defined in Table 2-5.
MODE | CLOCK POLARITY | CLOCK PHASE |
---|---|---|
0 | 0 | 0 |
1 | 0 | 1 |
2 | 1 | 0 |
3 | 1 | 1 |