Reset-Generation - Fujitsu SK-91465X-100PMC User Manual

3.11 Reset-Generation

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.
JP28, 50, 71 As well the DTR-line as the RTS-Line of UART"A" or UART "B" or
UART "C"can be used to generate a system reset.
JP72 This jumper selects whether the DTR/RTS line from UART"A" or UART"B"
or UART "C"will generate a system reset.
JP13 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.
JP14 Open this jumper if no external Reset shall be generated.
In this case only the internal reset is active (e.g.: power-on)
JP33 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
JP28 (DTR / RTS "A")
JP50 (DTR / RTS "B")
JP71 (DTR / RTS "C")
JP72 (UART"A"/"B/C")
JP13
(Reset imm./delayed)
JP14 (Main Reset)
JP33 (Polarity)
Default: grey
UG-910056-11
SK-91465X-100PMC User Guide
Chapter 3 Jumpers and Switches
Setting Description
1-2 DTR of UART"A" is selected
2-3 RTS of UART"A" is selected
1-2 DTR of UART"B" is selected
2-3 RTS of UART"B" is selected
1-2 DTR of UART"C" is selected
2-3 RTS of UART"C" is selected
1-2 UART"A" is used to generate Reset
3-4 UART"B" is used to generate Reset
5-6 UART"C" is used to generate Reset
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
Table 3-12: Reset Jumper Settings
Note 1:
JP28, JP33, JP50, JP71 and JP72 default setting is
open.
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