24
MSM548331
IC BLOCK DIAGRAMS
PIN No.
PORT NAME
I/O
FUNCTION
70
DAT.EN
O
Audio IC's I
2
C data in/out switching control.
71
DAT.OUT
O
I
2
C data output pin to the Audio IC.
72
A.CLK
O
Serial clock output to the Audio IC.
73
A.MUTE
O
Audlo circuit muting control output.
74
DATA
O
Serial data output to the headphone EVR.
75
CLK
O
Serial clock output to the headphone EVR.
76
STB
O
Strobe signal output to the headphone EVR.
77
RESET
I
Reset signal input pin.
78
STANDBY
O
This pin is "H" when the function is ON (STANDBY/ON LED control).
79
P.MONl
l
DISPLAY PANEL power on/off judge input pin (power on: H).
80
AL
O
AL power supply line control output ("H" when the functlon is ON).
82
XO
O
Crystal connecting pins.
83
Xl
O
87
SHORT
l
This pin turns to "L" when the AL 8V is cut off.
88
ENC.NTSC
O
NTSC/CCIR judge output (CCIR: H, NTSC: L).
89
DVD2
O
This pin turns to "L" when the DVD2 is selected.
90
EUAV3
O
This pin turns to "L" when the AV3 Europe is selected.
91
EUAV3
O
This pin turns to "H" when the AV3 Europe is selected.
92
EUAV2
O
This pin turns to "H" when the AV2 Europe is selected.
93
COMB.RST
O
COMB filter lC (lC 171 ) reset output.
94
COL.DEF
O
This pin turns to "L" when the DVD1 is selected.
95
COMB. ON
O
Thls pin turns to "H" when the color mode (comb filter is used).
This output Is used to swltch the IC211 & 212 (analog switches).
96
D.MUTE
-
Not used
97
FRONT
O
This pin turns to "L" when the FRONT (AV1) is selected.
98
AV 7
O
This pin turns to "L" when the AV7 is selected.
99
POLH
I
PC's Input honzontal sync slgnal's polarity Judge signal input pin.
100
EXIH
l
PC's Input vertlcal sync slgnal's polarity judge signal input pin.
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