LG TCH-M900, Service Manual

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