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PIC32MZ SPI pins
Serge Vakulenko edited this page Mar 9, 2015
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On PIC32MZ chip, a pin for SDIx signal is selected by writing appropriate value to SDIxR register.
SPI register | Available pins |
---|---|
SDI1R, SDI3R, SDI5R | RA14, RB5, RB9, RB10, RC1, RC14, RD2, RD6, RD10, RD14, RF1, RF4, RG1, RG8 |
SDI2R, SDI4R | RA15, RB1, RB3, RC4, RC13, RD3, RD7, RD11, RD15, RE5, RF0, RF5, RG0, RG7 |
SDI6R | RB2, RB6, RB14, RC2, RD0, RD1, RD5, RE8, RF2, RF3, RF13, RG9 |
A pin for SDOx signal is selected by writing appropriate value to the pin function register.
Pin register | SPI signals |
---|---|
RPA15R, RPB1R, RPB3R, RPC4R, RPC13R, RPD3R, RPD7R, RPD11R, RPD15R, RPE5R, RPF0R, RPF5R, RPG0R, RPG7R | SDO1, SDO2, SDO3, SDO4, SDO5 |
RPB2R, RPB6R, RPB14R, RPC2R, RPD0R, RPD1R, RPD5R, RPE8R, RPF2R, RPF3R, RPF13R, RPG9R | SDO4, SDO6 |
RPA14R, RPB5R, RPB9R, RPB10R, RPC1R, RPC14R, RPD2R, RPD6R, RPD10R, RPD14R, RPF1R, RPF4R, RPG1R, RPG8R | SDO1, SDO2, SDO3, SDO5 |
RPB0R, RPB7R, RPB8R, RPB15R, RPC3R, RPD4R, RPD9R, RPD12R, RPE3R, RPE9R, RPF8R, RPF12R, RPG6R | SDO6 |
Here is a combined list of all pins available for SPI functions:
Pin | Signal | Pictail | Conflict on MEB-II board |
---|---|---|---|
RA14 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | 4 | Touch screen serial clock |
RA15 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | 6 | Touch screen serial data |
RB0 | SDO6 | 23 | Camera LDO shutdown |
RB1 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | Display horizontal sync | |
RB2 | SDI6, SDO4, SDO6 | Bluetooth regulator enable | |
RB3 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | 10, 18 | Wi-Fi serial data in |
RB5 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | microSD data1 | |
RB6 | SDI6, SDO4, SDO6 | PGEC2, on-board ICSP programmer/debugger | |
RB7 | SDO6 | PGED2, on-board ICSP programmer/debugger | |
RB8 | SDO6 | EBI-SRAM address 10 | |
RB9 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | EBI-SRAM address 7 | |
RB10 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | 21 | Audio serial data in |
RB14 | SDI6, SDO4, SDO6 | 19, 20 | Button S3 on SK, microSD card detect |
RB15 | SDO6 | 22 | Camera input clock |
RC1 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | EBI-SRAM address 6 | |
RC2 | SDI6, SDO4, SDO6 | EBI-SRAM address 12 | |
RC3 | SDO6 | EBI-SRAM pixel clock | |
RC4 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | EBI-SRAM pixel clock | |
RC13 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | -- (free, pin 105) -- | |
RC14 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | Secondary oscillator | |
RD0 | SDI6, SDO4, SDO6 | Wi-Fi interrupt | |
RD1 | SDI6, SDO4, SDO6 | 25 | Audio bit clock |
RD2 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | EBI-SRAM/Display data 14 | |
RD3 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | EBI-SRAM/Display data 15 | |
RD4 | SDO6 | Camera pixel | |
RD5 | SDI6, SDO4, SDO6 | SQI memory chip select | |
RD6 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | Ethernet ETXEN | |
RD7 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | microSD command | |
RD9 | SDO6 | EBI-SRAM address 15 | |
RD10 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | 12, 16 | Wi-Fi serial clock |
RD11 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | Ethernet EMDC | |
RD12 | SDO6 | EBI-SRAM/Display data 12 | |
RD14 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | 15 | Audio serial data output |
RD15 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | Audio clock input | |
RE3 | SDO6 | EBI-SRAM/Display data 3 | |
RE5 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | EBI-SRAM/Display data 5 | |
RE8 | SDI6, SDO4, SDO6 | Camera shutdown | |
RE9 | SDO6 | 24 | Wi-Fi chip select |
RF0 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | EBI-SRAM/Display data 11 | |
RF1 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | EBI-SRAM/Display data 10 | |
RF2 | SDI6, SDO4, SDO6 | Camera serial data | |
RF3 | SDI6, SDO4, SDO6 | 13 | USB signal USBID |
RF4 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | EBI-SRAM/Display address 9 | |
RF5 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | EBI-SRAM/Display address 8 | |
RF8 | SDO6 | Camera serial clock | |
RF12 | SDO6 | 14, 27 | Audio left-right clock |
RF13 | SDI6, SDO4, SDO6 | Display backlight enable | |
RG0 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | EBI-SRAM/Display data 8 | |
RG1 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | EBI-SRAM/Display data 9 | |
RG6 | SDO6 | 11 | microSD clock |
RG7 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4, SDO5 | 7, 8 | Wi-Fi serial data out |
RG8 | SDI1, SDI3, SDI5, SDO1, SDO2, SDO3, SDO5 | 9 | microSD data 0 |
RG9 | SDI6, SDO4, SDO6 | EBI-SRAM address 2 |
PIC32MZ in 64-pin package has only SPI1-SPI4 ports available.
Signal | PIC32 | Function | Other |
---|---|---|---|
0 | RF4 | SDI1, SDI3, SDO1, SDO2, SDO3 | SDA5 |
1 | RF5 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 | SCL5 |
3 | RD10 | SDI1, SDI3, SDO1, SDO2, SDO3 | SCK4, SCL1 |
4 | RD11 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 | |
5 | RD0 | SDO4 | |
6 | RC13 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 | SOSCI |
7 | RC14 | SDI1, SDI3, SDO1, SDO2, SDO3 | SOSCO |
8 | RD1 | SDO4 | SCK1 |
9 | RD2 | SDI1, SDI3, SDO1, SDO2, SDO3 | SDA3 |
10 | RD3 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 | SCL3 |
12 | RD5 | SDO4 | |
13 | RB5 | SDI1, SDI3, SDO1, SDO2, SDO3 | PROG button |
14 | RF0 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 | |
15 | RF1 | SDI1, SDI3, SDO1, SDO2, SDO3 | |
21 | RE5 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 | |
25 | RG7 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 | SD_DI |
26 | RG8 | SDI1, SDI3, SDO1, SDO2, SDO3 | SD_DO |
27 | RG9 | SDO4 | SD_CS |
A1 | RB14 | SDO4 | SCK3 |
A5 | RB10 | SDI1, SDI3, SDO1, SDO2, SDO3 | TMS |
A6 | RB9 | SDI1, SDI3, SDO1, SDO2, SDO3 | |
A8 | RB6 | SDO4 | PGEC2 |
A11 | RB1 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 | PGEC1 |
A12 | RB2 | SDO4 | |
A13 | RB3 | SDI2, SDI4, SDO1, SDO2, SDO3, SDO4 |
SD card is attached to port SPI2, so if we don't want to interfere, we have the following choice:
Signal | PIC32 | SPI1 | SPI3 | SPI4 | Other |
---|---|---|---|---|---|
0 | RF4 | SDI1, SDO1 | SDI3, SDO3 | SDA5 | |
1 | RF5 | SDO1 | SDO3 | SDI4, SDO4 | SCL5 |
3 | RD10 | SDI1, SDO1 | SDI3, SDO3 | SCK4 | SCL1 |
4 | RD11 | SDO1 | SDO3 | SDI4, SDO4 | |
5 | RD0 | SDO4 | |||
6 | RC13 | SDO1 | SDO3 | SDI4, SDO4 | SOSCI |
7 | RC14 | SDI1, SDO1 | SDI3, SDO3 | SOSCO | |
8 | RD1 | SCK1 | SDO4 | ||
9 | RD2 | SDI1, SDO1 | SDI3, SDO3 | SDA3 | |
10 | RD3 | SDO1 | SDO3 | SDI4, SDO4 | SCL3 |
12 | RD5 | SDO4 | |||
13 | RB5 | SDI1, SDO1 | SDI3, SDO3 | PROG button | |
14 | RF0 | SDO1 | SDO3 | SDI4, SDO4 | |
15 | RF1 | SDI1, SDO1 | SDI3, SDO3 | ||
21 | RE5 | SDO1 | SDO3 | SDI4, SDO4 | |
A1 | RB14 | SCK3 | SDO4 | ||
A5 | RB10 | SDI1, SDO1 | SDI3, SDO3 | TMS | |
A6 | RB9 | SDI1, SDO1 | SDI3, SDO3 | ||
A8 | RB6 | SDO4 | PGEC2 | ||
A11 | RB1 | SDO1 | SDO3 | SDI4, SDO4 | PGEC1 |
A12 | RB2 | SDO4 | |||
A13 | RB3 | SDO1 | SDO3 | SDI4, SDO4 |