- First International Computer Laptop User Manual

Pin Assignments
4 CLK SMBus clock signal I/O
5 DTA SMBus data signal I/O
6 TH1 THERMAL O
7 BIN1 O
8 GND GROUND -
B.13 Audio Jack
The audio jack comprises of the headphone jack, line-out jack, and microphone jack:
SPDIF & Headphone Jack
The pin assignment of the headphone jack is as follows:
No Signal Description Type
4 GND Ground I
2 HP_L Headphone left sound O
3 HP_R Headphone right sound O
5 SPDIFDET SPDIF insert detect I
1 HPDET Headphone insert detect I
8 SPDIF PWR SPDIF power O
7 SPDIF SPDIF signal O
9 GND Ground I
Line-In Jack
The pin assignment of the line-in jack is as follows:
No Signal Description Type
1 GND Ground I
2 LINEINL Line in left sound I
3 LINEINR Line in right sound I
4 GND Ground I
5 GND Ground I
Microphone Jack
The pin assignment of the microphone jack is as follows:
No Signal Description Type
1 GND Ground I
2 MICIN External Microphone input signal I
3 GND Ground I
4 EXTMICDET EXTERNAL MIC detect I
5 GND Ground I
B.14 Internal Microphone Connector
The pin assignment of the internal microphone is as follows:
No Signal Description Type
1 MICIN External Microphone input signal
2 GND Ground
B-8 FIC A550 Service Manual