LG TCH-M540 Service Manual page 20

Name in Micom Name in Model
Pin
73 PC6/A6 PPWR_MUTE
74 PC5/A5 PEV_CLK
PC4/A4 PEV_DO
75
76 PC3/A3 PPWR
77 PC2/A2 PACC
PC1/A1 N.C
78
79 PC0/A0 PCDC_PWR
80 PA0/CS2# PFRT_DET
I IC501 MN6627933
1) PORT ASSIGNMENT
I /O
O To power amp, "MUTE" command output
Mute(High), Sound(Low)
O Clock for interface with volume controller
O To volume controller, data output
System Power supplier ON output
O
On(High), Off(Low)
From ISO jack, ACC signal input
I
ACC On(Low), ACC Off(High)
I Not to be used
CD changer power supplier ON output
O
CDC On(High), CDC Off(Low)
Front pannel existence signal input
I
Front Pannel Ok(High), Absent(Low)
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Description