XXV-02A
5
Pin No.
Pin Name
I/O
Function
Processing Operation Description
18
SCL_AMP
I/O
CLK input/output AMP communication
19
AUDIO_SCL
I/O
CLK input/output with audio chip
20
AUDIO_SDA
I/O
Data input/output with audio chip
21
AUDIO_MUTE
O
Mute output to audio chip
H : Mute OFF, L : Mute ON
22
E2P_SCL
I/O
CLK input/output with E2PROM
23
E2P_SDA
I/O
Data input/output with E2PROM
24
NC
O
Not used
25~28
DIP-SW1~DIP-SW4
I
AMP address setting
29
MODEL1
I
Model setting 1
30
MODEL2
I
Model setting 2
31,32
NC
O
Not used
33
VSS1
-
GND
34~37
NC
O
Not used
38
LCD-ILL
O
LCD backlight switch
H : ON, L : OFF
39
WHITE-LED
O
Triangle illumination switch
H : ON, L : OFF
40
NC
O
Not used
41~43
ATT1~ATT3
O
Output attenuate due to rise in temperature 1~3
H : Attenuate, L : Not attenuate
44,45
NC
O
Not used
46
COMM-SW
O
Communication IC power switch
H : ON, L : OFF
47~50
NC
O
Not used
51
D-PWER
O
D class amplifier power supply control
H : ON, L : OFF (2ch/4ch L fixed)
52
DC-DET
I
Speaker output DC voltage detection
H : Normal, L : Abnormal
53
NC
O
Not used
54
POWER-ON
O
Amplifier power supply control
H : ON (D/AB class), L : OFF
55
5VSW
O
5VSW
H : OFF, L : ON
Amplifier section input stage mute control
H : OFF, L : ON
Driver stage pop-noise mute control
H : OFF, L : ON
Fan rotation control
H : Operate, L : Stop
Fan speed control
H : Low speed, L : High speed
Hard reset
H : Normal, L : Reset
Amplifier power control
H : OFF, L : ON
LX-BUS communication control
H : OFF, L : ON
Data receive request from H/U
H : ON, L : OFF
64
NC
O
Not used
65
V_DOWN
I
Momentary power down detection
H : ON (Power down detection), L : OFF (L fixed)
66
NC
O
Not used
67
VSS0
-
GND
68
VD1
-
VDD
69
X2
-
Main clock input 1
70
X1
-
Main clock input 2
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