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Device
and operation
CPC307
C P C 3 0 7 U s e r M a n u a l
82
© 2 0 2 2 F a s t w e l v . 0 0 6
Table 4.39 Description of setting the jumpers to the XP20 connector for module versions 4.
х
Jumper state
Function
1 - 2
TX is pulled up through the 680 Ohm resistor to the +5V power supply
voltage to generate a 200 mV offset on the Y/Z lines.
3 - 4
Signal
–TX is pulled up through a 680 Ohm resistor to GND to generate the -
200 mV offset on the Y/Z lines.
5 - 6
When the jumper is set to the RX + / RX- line of COM6 interface (in the RS-
422/485 mode), a 120 Ohm terminating resistor is connected.
1 - 2 and 3 - 4
When the jumper is set to the TX+/TX- line of COM6 interface (in the RS-
422/485 mode), a 120 Ohm terminating resistor is connected.
Table 4.40. Description of setting the jumpers to the XP24 connector
Jumper state
Function
1 - 2
Operating mode of the soldered ATA Flash disk controller.
The jumper is installed - Master mode. The jumper is
removed - Slave mode.
2 - 3
When the jumper is set, the ATA Flash disk controller is disconnected from the
IDE bus, which allows you to connect up to 2 x external IDE devices (in
module versions older than 4.x this function is not supported, this configuration
is unacceptable, please see Section 8)
Table 4.41. Description of setting the jumpers to the XP25 connector
Jumper state
Function
1 - 2
When the jumper is set, the external opto-isolated signal performs the module
reset function. (External RESET#)
2 - 3
When the jumper is set, the +5V power supply voltage drop signal down to the
value of ... (PFO#) performs the module reset function. (Power Fail RESET#)
3 - 4
When the jumper is set, the +5 V supply voltage drop signal down to the value
of ... (PFO#) is switched to the line of the GPIO1[0] I/O port.
(Power Fail GPIO1[0]#)
4 - 5
When the jumper is set, the external opto-isolated signal is switched to the line
of GPIO1[0] I/O port.
(External GPIO1[0]#)
5 - 6
When the jumper is set, the external opto-isolated signal is switched to the
IOCHK# line of the ISA bus. (External INTERRUPT#).
6 - 7
When the jumper is set, the +5 V power supply voltage drop signal down to the
value of ... (PFO#) is switched to the IOCHK# line of the ISA bus.
(Power Fail INTERRUPT#)