Fujitsu SK-91464A-100PMC User Manual - Page 16
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3.8 CAN"A" (JP: 25, 26)
One high-speed CAN-transceiver can be connected to the microcontroller's CAN interface.
JP25, JP26 connects a CAN-port to the CAN-transceiver (U7, X10).
If the CAN interface is not used then the jumpers should be left open.
Jumper
JP25 (CAN"A"TX)
JP26 (CAN"A"RX)
3.9 Reset-Generation (JP: 3, 4, 5, 7, 24, 35)
In addition to the internal Power-On reset, the microcontroller can be reset by an external
reset circuit (Voltage Monitor) and also by a RS232 interface.
JP3, JP5 As well the DTR-line as the RTS-Line of UART"A" or UART"B" can be used
to generate a system reset.
JP4
This jumper selects whether the DTR/RTS line from UART"A" or UART"B"
will generate a system reset.
JP7
This solder jumper selects between normal (immediate) reset and delayed reset.
In delayed reset mode, the reset button has to be held down for 2 sec before a
reset is generated to avoid accidental resets.
JP24
Open this jumper if no external Reset shall be generated.
In this case only the internal reset is active (e.g.: power-on)
JP35
The signal on the DTR/RTS line can be negated with this jumper.
Remove the jumper in order to disable the RS232 reset circuit.
Jumper
JP3 (DTR / RTS "A")
JP4 (UART"A"/"B")
JP5 (DTR / RTS "B")
JP7
(Reset imm./delayed)
JP24 (Main Reset)
JP35 (Polarity)
FMEMCU-UG-910025-15
SK-91464A-100PMC User Guide
Chapter 3 Jumpers and Switches
Setting
Description
closed
TX4 of MCU is connected to CAN"A"
closed
RX4 of MCU is connected to CAN"A"
Setting
Description
1-2
DTR of UART"A" is selected
2-3
RTS of UART"A" is selected
1-2
UART"A" is used to generate Reset
2-3
UART"B" is used to generate Reset
1-2
DTR of UART"B" is selected
2-3
RTS of UART"B" is selected
1-2
Reset is applied immediately when SW6 is pressed
2-3
Reset is applied when SW6 is pressed >2sec
Closed
External Reset generation is active
Open
No external Reset generation
1-2
No negation for the DTR/RTS signal
2-3
DTR/RTS signal is negated
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