Uart 2 - Fujitsu MB88121 SERIES User Manual

3.8.1 UART 2

UART2 (connector X1) is selected as LIN master at default setting.
JP37 Select, if SIN2 is connected to RS-232- or LIN-transceiver
JP44 Select, if SOT2 is connected to RS-232- or LIN-transceiver
JP46 Select, if RS-232- or LIN-transceiver is connected to X1 pin2 (shared pin)
JP30 Some terminal programs needs a connection between CTS and RTS
JP39 Selects, if DTR or RTS will be used for system reset generation
JP47 Enables the LIN transceiver
JP51 Selects, if UART2 will be LIN master or LIN slave
Jumper
JP37
JP44
JP46
JP30
JP39
JP47
JP51
Default: grey
FMEMCU-UG-910017-11
SK-91F467-FLEXRAY V1.1
Jumpers and Switches
Setting Description
1-2 MCU SIN2 connected to RS-232 transceiver
2-3 MCU SIN2 connected to LIN transceiver
1-2 MCU SOT2 connected to RS-232 transceiver
2-3 MCU SOT2 connected to LIN transceiver
1-2 X1 pin2 is connected to RS-232 transceiver
2-3 X1 pin2 is connected to LIN transceiver
ON (closed) RTS and CTS is connected at connector X1
OFF (open) RTS and CTS is not connected at connector X1
1-2 DTR can be used for system reset
2-3 RTS can be used for system reset
ON (closed) LIN transceiver is enabled
OFF (open) LIN transceiver is not enabled
ON (closed) LIN master mode
OFF (open) LIN slave mode
Table 3-16: UART2 Settings
Note:
UART2 has to be selected with
JP57, to generates a system reset
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