Uart 4 (Flash Programming) - Fujitsu MB88121 SERIES User Manual

3.8.2 UART 4 (Flash programming)

UART4 (connector X4) is selected as RS-232 at default setting. UART4 is also used to write
user software into the Flash of the MCU.
JP60 Select, if SIN4 is connected to RS-232- or LIN-transceiver
JP65 Select, if SOT4 is connected to RS-232- or LIN-transceiver
JP69 Select, if RS-232- or LIN-transceiver is connected to X4 pin2 (shared pin)
JP58 Some terminal programs needs a connection between CTS and RTS
JP64 Selects, if DTR or RTS will be used for system reset generation
JP71 Enables the LIN transceiver
JP72 Selects, if UART4 will be LIN master or LIN slave
Jumper
JP60
JP65
JP69
JP58
JP64
JP71
JP72
Default: grey
© Fujitsu Microelectronics Europe GmbH
SK-91F467-FLEXRAY V1.1
Jumpers and Switches
Setting Description
1-2 MCU SIN4 connected to RS-232 transceiver
2-3 MCU SIN4 connected to LIN transceiver
1-2 MCU SOT4 connected to RS-232 transceiver
2-3 MCU SOT4 connected to LIN transceiver
1-2 X4 pin2 is connected to RS-232 transceiver
2-3 X4 pin2 is connected to LIN transceiver
ON (closed) RTS and CTS is connected at connector X4
OFF (open) RTS and CTS is not connected at connector X4
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 3-17: UART4 Settings
Note:
UART4 has to be selected with
JP57, to generates a system reset
Note:
UART4 is used as serial interface
for Softune Workbench Monitor
Debugger. Jumper J58 must be
closed.
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