Device
and operation
CPC307
C P C 3 0 7 U s e r M a n u a l
42
© 2 0 2 2 F a s t w e l v . 0 0 6
4.3.6 PS/2-keyboard and mouse
A keyboard and/or mouse with PS/2 interfaces can be connected to the module. This interface is
routed to the XP23 6-pin connector.
The interface is routed to the XP23 connector (IDC2-6, single-row, 2 mm male connector).
Pin assignment of the XP23 connector is specified in the Table 4.12.
The module has a PLS2-40/6 connector.
The recommended mating part is Leotronics 2018-3061 (socket) and 2023-2000 set of contacts.
Table 4.12. Pin assignment of XP23 connector for PS/2 keyboard and mouse connection
Pin
Signal
Pin
Signal
1
KBD CLK
4
GND
2
KBD DATA
5
+5 В
3
MOUSE CLK
6
MOUSE DATA
Figure 4.11. Numbering pins of the XP23 connector
4.3.7 Opto-isolated reset/interrupt
The module has an XP19 connector, which can be used to generate an opto-isolated remote reset
or interrupt signal, depending on the XP25 connector jumper setting. This signal can be switched
as follows:
- module reset (with a jumper installed on pins 1-2 of the XP25 connector);
- GPIO1 line 0 (when the jumper is installed to contacts 4-5 of the XP25 connector). You can set
the reset function or IRQx interrupt number to be generated by an external opto-isolated signal in
the BIOS Setup menu or by programming the GPIO1 port registers;
- NMI interrupt generation (with the jumper on pins 5-6 of the XP25 connector installed). In such a
configuration, the external opto-isolated input signal is switched to the IOCHK# line of the ISA bus.
The XP25 connector also sets the function of the PFO# (Power Fail Output) signal of the external
power supply supervisor chip (paragraph 4.3.18 Module Power Supply Supervisor). The PFO#
signal is set to
“0” when the input voltage of +5V falls down to +4.45V. The following switching of
the PFO# signal is possible:
- Module reset at active PFO# signal level (with jumper installed on pins 2-3 of XP25 connector);
- Line 0 port GPIO1 (with the jumper installed on contacts 3-4 of the XP25 connector). You can set
the reset function or IRQx interrupt number to be generated by the PFO# signal in the BIOS Setup
menu or by programming the GPIO1 port registers;
