Motor Control; Motor Control Io Interface; Table 43. Motor Control Terminal And Io Function Assignment - ST STM32MP157 Series User Manual

Pin number
28
6.27

Motor control

The STM32MP157x-EV1 board supports both asynchronous and synchronous 3-phase brushless motor control
via a 34-pin connector MB1262/CN22, which provides all required control and feedback signals, to and from
motor power-driving board.
Available signals on this connector includes emergency stop, motor speed, 3-phase motor current, bus voltage,
heatsink temperature coming from the motor driving board and 6 channels of PWM control signal (MC-xH/L)
going to the motor driving circuit.
6.27.1

Motor control IO interface

Because of IO consuming limitation, the motor control IO interface is not enabled by default. As described below,
some board modifications are needed to connect the motor control interface.
Table 43 describes the assignment of the MB1262/CN22 motor control interface and the IO function associated
from the STM32MP157xAA3.
Motor Control connector CN22
Terminal
Terminal name
1 Emergency Stop
2 GND
3 MC_UH
4 GND
5 MC_UL
6 GND
7 MC_VH
8 GND
9 MC_VL
10 GND
11 MC_WH
12 GND
13 MC_WL
14 Bus Voltage
15 PhaseA current
16 GND
17 PhaseB current
18 GND
19 PhaseC current
20 GND
UM2535 - Rev 1
Pin name Signal name
GPIO15 -
Table 43. Motor control terminal and IO function assignment
Port
Function
name
PA6 TIM8_BKIN
PI5 TIM8_CH1
PH13 TIM8_CH1N
PI6 TIM8_CH2
PH14 TIM8_CH2N
PI7 TIM8_CH3
PH15 TIM8_CH3N
PA3 ADC_1_IN15
PF12 ADC_1_IN6
ANA0 ADC_1_IN0
ANA1 ADC_2_IN1
-
STM32MP157xAA3 microcontroller
Alternate
Board configurations to
enable Motor Control
function
DCMI_PIXCLK Close MB1262/SB22
Close MB1262/SB67
SAI_2_SCK_A
Open MB1262/SB9 and SB66
CAN_1_TX Close MB1262/SB76
Close MB1262/SB75
SAI_2_SD_A
Open MB1262/SB10 and SB73
DCMI_D4 Close MB1262/SB21
Close MB1262/SB65
SAI_2_FS_A
Open MB1262/SB11 and SB63
DCMI_D11 Close MB1262/SB33
GPIO6_TIM2_CH4 Close MB1262/SB14
Close MB1262/SB20
ADC_2_IN0 Close MB1262/SB12
Close MB1262/SB13
UM2535
Motor control
Function
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