25
VSX-523-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
No.
Symbol
I/O
Description
51
C_RLY
O
Tr driven control pins at the Center speaker output Relay (active at H)
52
N
C
N
ot used
53
SP_DC
O
HDMI LED on/off control pin if Speaker DC Protection
54
N
ET_P
W
R
O
Control pin HDMI IC +5
V
REG. IC (on: H)
55
H+1.
8V
_O
N
O
Control pin HDMI IC +1.
8
V
REG. IC (on: H)
56
D+3.3
V
_O
N
O
Control pin d3.3
V
DC/DC IC (on: H)
57
MIC_DET
O
Monitoring the input pin microphone connection (detection: L)
5
8
45
88
_PD
N
O
Output for AK45
88
power down
59
45
88
_SDA
I/O
Data signal output for AK45
88
(I2C)
60
45
88
_SCL
O
Clock signal output for AK45
88
(I2C)
61
DSP_SIMO
O
Data signal Input for DA
8
0
8
62
3
V
3
+3.3
V
Power Supply
63
DSP_SPICLK
O
Clock signal output for DA
8
0
8
(SPI)
64
G
N
D
Ground
65
DSP_RST
O
Output to reset DA
8
0
8
66
N
C
N
ot used
67
DSP_SOMI
I
Data signal output for DA
8
0
8
(SPI)
6
8
DSP_CS
O
Chip select signal output for DA
8
0
8
69
DSP_E
N
ABLE
I
SPI Enable signal input from DA
8
0
8
70
HDMI_SEL
O
IC signal of the control pins at select HDMI or analog audio
71
PROTECT2
I
AMP Assy input signal of the RADIATOR THERMAL pin (L = PROTECTIO
N
)
72
H+3.3
V
_FET_O
N
O
Control pin HDMI IC +3.3
V
REG. IC (on: H)
73
SUB_O
N
O
Control pin sub CPU IC +3.3
V
REG. IC (on: H)
74
SUB_IRQ
I
Interrupt signal output pin to main CPU
75
HDMI_MUTE
I
Input for HDMI_RX_MUTE condition
76
USB5
V
_O
N
O
Output for
N
CP3
8
0 Enable Input
77
SUB_RST
O
Output to reset sub CPU
7
8
USB5
V
_DET
O
USB+5
V
oltage monitor input pin overcurrent protection
79
SCDO_MAI
N
O
Data signal output to sub CPU
8
0
CSCK_MAI
N
O
Clock signal output for sub CPU
8
1
SET OPTIO
N
I
Input for Set option
8
2
STEP OPTIO
N
I
Input for Step (Group) option
8
3
V
IDEO_MUTE
O
Ouput for
V
ideo IC MUTE condition
8
4
OSD/FLT_DATA
O
OSD or FLT Data pin
8
5
PROTECT1
I
AMP Assy Protection detection signal input pin (ASO = 0.
8
2
V
, DC = 1.39
V
)
8
6
V
OL_D
N
I
Data input for
V
OLUME encoder (
V
OLUME DO
WN
is counterclockwise direction)
8
7
V
OL_UP
I
Data input for
V
OLUME encoder (
V
OLUME UP is clockwise direction)
88
I
N
_UP
I
Data input for I
N
PUT selector encoder
8
9
N
C
N
ot used
90
KEY1
I
Data input for Key1 scan
91
KEY3
I
Data input for Key3 scan
92
KEY2
I
Data input for Key2 scan
93
I
N
_D
N
I
Data input for I
N
PUT selector encoder
94
FLT_CE
O
Output for chip enable of SC16315
95
N
C
N
ot used
96
G
N
D
Ground
97
USBDCERR
O
N
ot used
9
8
3
V
3
+3.3
V
Power Supply
99
3
V
3
+3.3
V
Power Supply
100
V
+5
V
_DET
I
Detection pin
V
+5
V
protection
jomi