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SK-96370-144PMC-GDC User Guide
Chapter 3 Jumpers and Switches
FMEMCU-UG-960014-10 - 20 - © Fujitsu Microelectronics Europe GmbH
3.9 LIN / UART
There are two identical circuit blocks for LIN or RS232 connections. Each of the two D-Sub
connectors can be configured as LIN or RS232 interface. DTS or RTS can be selected as
reset source, and RTS and CTS can be connected by a jumper, since some terminals and
Flash programming tools need this connection. Pin 1 (Vs) of X5 and X9 can be connected to
the voltage input of the board by jumpers in order to supply the LIN bus.
3.9.1 LIN-UART 0 (JP: 19, 21, 23, 25, 27, 28, 29, 31)
Jumper Setting Description
1-2 SIN0 is connected to RS232 transceiver
JP21
(RXD)
2-3 SIN0 is connected to LIN transceiver
1-2 SOT0 is connected to RS232 transceiver
JP25
(TXD)
2-3 SOT0 is connected to LIN transceiver
1-2 X5 pin 2 is connected to RS232 transceiver
JP27
(RS232/LIN)
2-3 X5 pin 2 is connected to LIN transceiver
Closed RTS and CTS of X5 are connected
JP19
(RTS-CTS)
Open RTS and CTS of X5 are not connected
1-2 DTR signal (pin 6 of X5) is used as reset source
JP23
(DTR/RTS)
2-3 RTS signal (pin 7 of X5) is used as reset source
Closed LIN transceiver is enabled
JP29
(LIN enable)
Open LIN transceiver is disabled
Closed LIN-UART0 is LIN Master
JP31
(LIN master)
Open LIN-UART0 is LIN Slave
Closed LIN bus (X5 pin 1) is powered by the board
JP28
(LIN Vbat)
Open LIN bus (X5 pin 1) is not powered by the board
Table 3-7: UART0 Settings