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UM2198
Hardware layout and configuration
68
Figure 6. Orientation setting of 5.7-inch LCD daughterboard
8.20
MFX (Multi Function eXpander)
MFX circuit on STM32H743I-EVAL Evaluation board acts as IO-expander. The
communication interface between MFX and STM32H743XI is I2C1 bus.
The signals connected to MFX are listed in
Table 15
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Table 15. MFX signals
Pin
number
of MFX
Pin name of
MFX
MFX functions
Function of
STM32H743I-EVAL
Direction
(For MFX)
Terminal
device
15
PA5
MFX_GPIO5
Audio_INT
Input
Codec
16
PA6
MFX_GPIO6
OTG_FS1_
OverCurrent
Input
USB_FS1
17
PA7
MFX_GPIO7
OTG_FS1_
PowerSwitchOn
Output
USB_FS1
18
PB0
MFX_GPIO0
JOY_SEL
Input
Joystick
19
PB1
MFX_GPIO1
JOY_DOWN
Input
Joystick
20
PB2
MFX_GPIO2
JOY_LEFT
Input
Joystick
26
PB13
MFX_GPIO13
SD_LDO_SEL
Output
microSD
27
PB14
MFX_GPIO14
TOUCH_INT
Input
LCD
28
PB15
MFX_GPIO15
MicroSDcard Detect
Input
microSD
29
PA8
MFX_GPIO8
OTG_FS2_
OverCurrent
Input
USB_FS2
30
PA9
MFX_GPIO9
OTG_FS2_
PowerSwitchOn
Output
USB_FS2
31
PA10
MFX_GPIO10
LED2
Output
LED
32
PA11
MFX_GPIO11
LED4
Output
LED
33
PA12
MFX_GPIO12
-
-
-
39
PB3
MFX_GPIO3
JOY_RIGHT
Input
Joystick
40
PB4
MFX_GPIO4
JOY_UP
Input
Joystick
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