Usb; Rs-232 And Irda; Table 11. Rs-232- And Irda-Related Jumpers - ST STM32373C-EVAL User Manual

Hardware layout and configuration
2.8

USB

STM32373C-EVAL evaluation board supports USB2.0 compliant, full-speed communication
via a USB type B connector (CN16). The evaluation board can be powered by this USB
connection at 5 V DC with 500 mA current limitation.
USB disconnection simulation can be implemented by controlling an external 1.5 KΩ pull-up
resistor on the USB+ line. The pull-up function can be enabled by PC5.
The USB operates correctly when VDD > 3 V.
2.9

RS-232 and IrDA

RS-232 (with hardware flow control clear to send (CTS) and request to send (RTS)) and
IrDA communication are supported by:
● D-type 9-pin RS-232 connector (CN12)
●
IrDA transceiver (U12)
They are connected to USART2 of the STM32F373VCT6 on the STM32373C-EVAL
evaluation board. The Bootloader_RESET signal (which is shared with the CTS signal) and
the Bootloader_BOOT0 signal which is shared with the demand signal repository (DSR)
signal) are added on the RS-232 connector, CN12, for ISP support.
Table 11.
Jumper
JP6
JP7
18/66
RS-232- and IrDA-related jumpers
USART2_RX is connected to the RS-232 transceiver and RS-
232 communication is enabled when JP6 is set as shown to the
right:
This is the default setting.
USART2_RX is connected to the IrDA transceiver and IrDA
communication is enabled when JP6 is set as shown to the
right:
USART2_CTS is connected to the RS-232 transceiver when
JP7 is set as shown to the right:
This is the default setting.
Bootloader_RESET is connected to the RS-232 transceiver
when JP7 is set as shown to the right:
Doc ID 023566 Rev 1
Description
UM1564
Jumper setting
1 2 3
1 2 3
1 2 3
1 2 3