Tomcat i875PF S5105
Chapter 2: Board Installation
7
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Front USB Header (J9)
Signal
Description
Pin #
Pin #
Signal
Description
VCC
1 2
VCC
USB
Channel_1
Data -
3 4
USB
Channel_2
Data -
USB
Channel_1
Data +
5 6
USB
Channel_2
Data +
GND
7 8
GND
NC
9 10
GND
External Speaker Header (J10)
Pin_1
Pin_4
Pin_1 :
S
Pin_2 :
Pin_3 :
Speaker/ Buzzer –
Pin_4 :
Speaker -
Close Pin-2and Pin-3
(Default)
Enable onboard buzzer
Open Pin-1 ~ Pin-4
Disable onboard buzzer and can connect
to chassis 1x4 speaker by Pin_1 and
Pin_4