26 SBC-456/456E User Manual
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1 2 3 4
1 2 3 4
Buzzer or external speaker (J4)
The CPU card has its own buzzer. You can disable the internal
buzzer and connect an external speaker to EXT SPK. Enabling the
external speaker automatically disables the internal buzzer.
Buzzer or External Speaker
Buzzer
External Speaker
OR
Buzzer or External speaker (J4)
Pin
Function
1
Vcc
2
Speaker output
3
Buzzer in
4
Speaker output
Reserved IR connector (J5)
IR connector (J5)
Pin
Function
5
IR_TX
4
GND
3
IR_RX
2
FIR_RX
1
V
CC
Содержание SBC-456
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