28
CMX158886 cpuModule
BDM-610000049
Rev G
Utility Port Connector (CN5)
The utility port connector implements the following functions:
•
PC/AT compatible keyboard port
•
PS/2 mouse port
•
Speaker port (0.1W output)
•
Hardware Reset input
•
Battery input for Real Time Clock
•
Soft Power Button input
Table 8 provides the pinout of the multi-function connector.
Facing the connector pins, the pinout is:
Speaker
A speaker output is available on pins 1 and 2 of the multi-function connector. These outputs are controlled by a
transistor to supply 0.1 W of power to an external speaker. The external speaker should have 8
Ω
impedance and
be connected between pins 1 and 2.
Table 8
Utility Port Connector (CN5)
Pin
Signal
Function
In/Out
1
SPKR+
Speaker Output (open collector)
out
2
PWR
+5 V
out
3
RESET
Manual Push-Button Reset
in
4
PWRSW
Soft Power Button
in
5
KBD
Keyboard Data
in/out
6
KBC
Keyboard Clock
out
7
GND
Ground
—
8
MSC
Mouse Clock
out
9
BAT
RTC Battery Input
in
10
MSD
Mouse Data
in/out
9
7
5
3
1
BAT
GND
KBD
RESET
SPKR+
MSD
MSC
KBC
PWRSW
PWR
10
8
6
4
2
Содержание BDM-610000049
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