Limitations; Gpio 40-Pin Expansion Connector; Figure 24. Motor Control Connector Mb1262/Cn22; Figure 25. Mb1262/Cn21 Connector - ST STM32MP157 Series User Manual

Motor Control connector CN22
Terminal
Terminal name
21 NTC Bypass
22 GND
23 Dissipative Brake
24 GND
25 5V
26 Heatsink Temp.
27 PFC Sync
28 3V3
29 PFC PWM
30 GND
31 Encoder A
32 GND
33 Encoder B
34 Encoder Index
6.27.2

Limitations

Due to the share of some IO of STM32MP157xAA3 by multiple peripherals, the following limitations apply in using
the Motor control features:
The Motor control may not be operated simultaneously with the camera, audio Codec, CAN and GPIO
expansion (GPIO6, 7 and 12).
6.28

GPIO 40-pin expansion connector

A 2x20-pin, 2.54 mm, GPIO connector is implemented on MB1262/CN21.
28 pins are GPIO, 8 are GND, 2x 5V DC and 2x 3V3 DC are provided on this connector.
This GPIO 40-pin expansion connector has a Raspberry Pi shields support capability.
UM2535 - Rev 1
STM32MP157xAA3 microcontroller
Port
Function
name
PF3 GPIO
PH6 TIM12_CH1
PF11 ADC_1_IN2
PE0 TIM4_ETR
PB8 TIM4_CH3
PH10 TIM5_CH1
PH11 TIM5_CH2
PH12 TIM5_CH3
Figure 24. Motor control connector MB1262/CN22
Figure 25. MB1262/CN21 connector
GPIO 40-pin expansion connector
Alternate
Board configurations to
enable Motor Control
function
GPIO7 Close MB1262/SB19
GPIO12_TIM12_CH
Close MB1262/SB29
1
Close MB1262/SB70
SAI_2_SD_B
Open MB1262/SB8 and SB69
Close MB1262/SB53
SAI_2_MCLK_A
Open MB1262/SB7
DCMI_D6 Close MB1262/SB24
DCMI_D1 Close MB1262/SB28
DCMI_D2 Close MB1262/SB30
DCMI_D3 Close MB1262/SB26
UM2535
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