User's Manual
Table Of Contents
- 1 Features
- 2 Ordering information
- 3 Development environment
- 4 Conventions
- 5 Delivery recommendations
- 6 Hardware layout and configuration
- 6.1 Power supply management
- 6.2 Clocks
- 6.3 Reset sources
- 6.4 User buttons and LEDs
- 6.5 Physical input devices: buttons
- 6.6 Boot options
- 6.7 Embedded ST-LINK/V2-1
- 6.8 ETM TRACE Mictor-38 connector
- 6.9 JTAG connector
- 6.10 DDR3L
- 6.11 eMMC
- 6.12 NAND Flash memory
- 6.13 Quad-SPI NOR Flash memory
- 6.14 microSD card
- 6.15 Audio
- 6.16 DSI LCD
- 6.17 Camera
- 6.18 1 Gbps Ethernet
- 6.19 USB OTG HS
- 6.20 USB host
- 6.21 RS-232 port
- 6.22 CAN FD
- 6.23 Smartcard
- 6.24 ADC/DAC
- 6.25 I2C_EXT connector
- 6.26 MFX MCU
- 6.27 Motor control
- 6.28 GPIO 40-pin expansion connector
- 6.29 RGB LTDC connector
- 7 STM32MP157F-EV1 Evaluation board information
- Appendix B STM32MP157F-EV1 I/O assignment
- Appendix C Federal Communications Commission (FCC) and ISED Canada Compliance Statements
- Appendix D CE conformity
- Revision history
- Contents
- List of tables
- List of figures
Table 41. I2C_EXT connector pinout
MB1262/CN13
Signal name Pin Pin Signal name
EXT_SDA 1 2 NC
EXT_SCL 3 4 EXT_RST
3V3 5 6 NC
GND 7 8 NC
6.26 MFX MCU
The MFX, Multi-Function eXpander MCU, is used as a GPIO expander, in position MB1262/U20.
6.26.1 MFX I/O expander
Supplied by 3V3.
The communication interface between MFX and
STM32MP157FAA1 is an I
2
C bus and IRQOUT pin.
The I
2
C is I2C2 that is shared with all the peripherals: audio codec, DSI LCD, RGB LTDC, camera, and USB Hub.
The MFX I
2
C address is 0x42h.
Table 42. HW configuration for the MFX interface
I/O SB Setting
Configuration
(1)
PI8 R127 ON MFX_IRQ_OUT is connected to PI8
PH5 R124 ON PH5 is used as I2C2_SDA
PH4 R125 ON PH4 is used as I2C2_SCL
PD10 - - SUB_NRST
1. Default configuration in bold
Table 43. I/O signals driven by the MFX
Pin number Pin name Signal name Function
18 GPIO0 JOY_CENTER MB1262/B1 joystick selection
19 GPIO1 JOY_DOWN MB1262/B1 joystick down direction
20 GPIO2 JOY_LEFT MB1262/B1 joystick left direction
39 GPIO3 JOY_RIGHT MB1262/B1 joystick right direction
40 GPIO4 JOY_UP MB1262/B1 joystick up direction
15 GPIO5 Audio_INT MB1262/U8 audio codec interrupt
16 GPIO6 SMARTCARD_3V/5V MB1262/U5 smartcard 3 V 5 V selection
17 GPIO7 SMARTCARD_OFF MB1262/U5 smartcard OFF
29 GPIO8 SMARTCARD_RST MB1262/U5 smartcard RESET
30 GPIO9 SMARTCARD_CMDVCC MB1262/U5 smartcard VCC command
31 GPIO10 MIC_MEMS_LED MB1262/CN8 pin12
32 GPIO11 - -
33 GPIO12 CAMERA_PLUG Camera plug detection
26 GPIO13 - -
27 GPIO14 LCD_INT DSI or LTDC interrupt
28 GPIO15 - -
UM2648
MFX MCU
UM2648 - Rev 1
page 37/61