SPI Block¶
How this block appears in a Simulink model?¶
What can be configured?¶
| Configuration Parameter | Selectable Option/Value | Description |
|---|---|---|
| SPI Module | 2 – (HSPI)----3 – (HSPI) | Specify SPI module for transmit or receive data. |
| SPI Mode | 0--1--2--3 | Select the SPI mode. |
| Clock Frequency (kHz) | Transferring each byte takes eight times the clock period 8/fspi. If the clock frequency is too high, the use of some functions might be limited. | |
| Data format (Rx and Tx) | First bit MSB--First bit LSB | Select data format |
| Chip select pin (CS) | 1 to 15 | Select pin for CS |
| Clock pin (SCLK) | 0 to 14 | Select pin for SCLK |
| Master read (MISO) | Not used--0 to 13 | Select pin for MISO |
| Master write (MOSI) | Not used--0 to 13 | Select pin for MOSI |
| Bytes write count | Number of data bytes for write transaction (bytes sent via MOSI pin) | |
| Bytes read count | Number of data bytes for read transaction (bytes sent via MISO pin) | |
| Sample time (sec) | -1 (inherited) or specify | Specify sample time for the block |
SPI pin name and function ?
| Pin name | Alternative naming | Function |
|---|---|---|
| SCLK | SCK, CLK, CK | Serial Clock. Oscillating signal generated by a Host that keeps the transmission of data bits in sync. |
| MOSI | MDO, SDO, DO | Master Out, Slave In, a.k.a. D. Data transmission from a Host to Device. |
| MISO | MDI, SDI, DI | Master In, Slave Out, a.k.a. Q. Data transmission from a Device to Host. |
| CS | NSS, nCS | Chip Select. Allows a Host to select individual Device(s) connected to the bus in order to send or receive data. |
Demo¶
Previous : UART Rx Block
Next : I2C Block