Analog Signals Branching For Mems; Clock Source Setting; Reset Button; Table 11. Analog Signals Branching Of Stm32 Pins Pa6 And Pa7 To Analog Mems - ST STM32F107Series User Manual

Configuration
5.7

Analog signals branching for MEMS

Table 11.
Jumper
R63
(0 Ω resistor)
R64
(0 Ω resistor)
5.8

Clock source setting

Table 12.
Jumper
JP1
(3-pin resistor)
The benefit of using crystal resonator of desired frequency is described in STEVAL-
CCA021V1 user manual UM0722. The correct crystal resonator frequency must be chosen
with regard to using PHY or not. If the PHY is used, only X2 can be used.
5.9

Reset button

A manual reset button (RESET) is available on the board top side. It resets the STM32
microcontroller, both optional Wi-Fi modules U9, U10 and the Ethernet PHY U8.
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Analog signals branching of STM32 pins PA6 and PA7 to analog MEMS
ADC_IN6 is connected to analog MEMS connector
(out1 signal)
(STM32 pin PA6 can be also configured as SPI
MISO)
ADC_IN6 is disconnected to analog MEMS
connector (out1 signal)
ADC_IN7 is connected to analog MEMS connector
(memsref signal)
(STM32 pin PA7 can be also configured as SPI
MOSI)
ADC_IN7 is disconnected to analog MEMS
connector (memsref signal)
Clock source setting
Crystal resonator X1 of 14.7456 MHz is connected
to the STM32
(Default)
Crystal resonator X2 of 25.0000 MHz is connected
to the STM32
Doc ID 17009 Rev 2
Description
Description
UM0896
Configuration
R63 assembled
R63 not assembled
R64 assembled
R64 not assembled
Configuration