Hardware layout and configuration
UM0426
12/46
Doc ID 13472 Rev 5
2.6 Audio
The STM3210B-EVAL board supports both audio recording and playback. This can be
disabled or enabled by setting the jumpers JP6 and JP7. The audio volume can be adjusted
using the potentiometer RV2, and the microphone amplifier gain can be adjusted using the
potentiometer RV3.
2.7 Serial
flash
A 64 Mbit serial Flash connected to SPI1 of the STM32F10X microcontroller shares the
same SPI port with the MicroSD Card using a different chip select signal. Serial Flash chip
select is managed by the standard I/O port PA4.
2.8 CAN
The STM3210B-EVAL board supports CAN 2.0A/B compliant CAN bus communication
based on 3.3 V CAN transceiver. The high-speed mode, standby mode and slope control
mode are available and selected by setting JP2.
Table 5.
Audio jumpers
Jumper
Description
JP6
Audio power amplifier TS4871 is forced into standby mode when JP6 is not fitted.
Default setting: Fitted
JP7
Microphone pre-amplifier MAX4061 is forced into shutdown mode when JP7 is fitted.
Default setting: Not fitted
Table 6.
CAN jumpers
Jumper
Description
JP2
CAN transceiver functions in standby mode when JP2 is set as shown below:
CAN transceiver functions in high-speed mode when JP2 is set as shown below:
CAN transceiver functions in slope control mode when JP2 is not fitted.
(Default setting)
JP3
CAN terminal resistor is enabled when JP3 is fitted.
Default setting: Not fitted
1 2 3
1 2 3
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