Multi-Function Expander; Table 16. Mfx Signals; Figure 1. Stm32F779I-Eval Evaluation Board - ST STM32F779I-EVAL User Manual

Hardware layout and configuration
6.19

Multi-Function expander

The Multi-Function expander (MFX) is implemented as an I/O expander circuit on the
STM32F779I-EVAL evaluation board. The communication interface between MFX and
STM32F779NI is done through the I2C1 interface.
The signals connected to MFX are listed in
Pin
number
of MFX
10
15
16
17
18
19
20
26
27
28
29
30
31
32
33
39
40
30/80
Pin name of
MFX functions
MFX
PA0 MFX_GPO1
PA5 MFX_GPIO5
PA6 MFX_GPIO6
PA7 MFX_GPIO7
PB0 MFX_GPIO0
PB1 MFX_GPIO1
PB2 MFX_GPIO2
PB13 MFX_GPIO13
PB14 MFX_GPIO14
PB15 MFX_GPIO15
PA8 MFX_GPIO8
PA9 MFX_GPIO9
PA10 MFX_GPIO10
PA11 MFX_GPIO11
PA12 MFX_GPIO12
PB3 MFX_GPIO3
PB4 MFX_GPIO4
DocID029088 Rev 3
Table 16: MFX signals

Table 16. MFX signals

Function of
STM32F779I-EVAL
XSDN
Audio_INT
OTG_FS1_
OverCurrent
OTG_FS1_
PowerSwitchOn
JOY_SEL
JOY_DOWN
JOY_LEFT
MII_INT
LCD_INT
MicroSDcard Detect1
OTG_FS2_
OverCurrent
OTG_FS2_
PowerSwitchOn
MicroSDcard Detect2
RSTI
Camera_PLUG
JOY_RIGHT
JOY_UP
UM2036
.
Direction
Terminal
device
(For MFX)
Output Camera
Input Codec
Input USB_FS1
Output USB_FS1
Input Joystick
Input Joystick
Input Joystick
Input Ethernet PHY
Input LCD
Input MicroSD1
Input USB_FS2
Output USB_FS2
Input MicroSD2
Output Camera
Input Camera
Input Joystick
Input Joystick