HT-SB30 (serv.man3) - Sharp Audio Service Manual (repair manual). Page 9

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HT-SB30
5 – 1
CHAPTER 5. MAJOR PART DRAWING
[1] Function Table Of IC
IC601 CH-IXA372AWA1 : SYSTEM MICROCONTROLLER (IXA372AW) (1/2)
NAME
PIN
No.
H/W
PORT_TYPE
PULL-UP
O
/
I
 
S
O
M
C
O
L
C
S
NEED
P3_5/SCL/SSCK/(TRCIOD)
O
/
I
 
S
O
M
C
O
T
S
R
_
P
A
D
P3_7/TRAO/SSO/RXD1/(TXD1)
T
U
P
N
I
I
T
E
S
E
R
RESET
T
U
P
N
I
I
T
U
P
N
I
I
R
O
R
R
E
_
P
A
D
NEED
XOUT/XCOUT/P4_7
-
-
D
N
G
VSS/AVSS
2
D
E
L
_
T
B
XIN/XCIN/P4_6
-
-
C
C
V
VCC/AVCC
T
U
P
N
I
I
E
D
O
M
NEED
MODE
T
U
P
N
I
I
P
O
T
S
_
S
Y
S
P4_5/INT0/(RXD1)
O
/
I
 
S
O
M
C
I
N
I
_
X
R
P1_7/TRAIO/INT1
O
/
I
 
S
O
M
C
O
E
T
U
M
_
P
A
D
P3_6/(TXD1)/(RXD1)/(INT1)
O
/
I
 
S
O
M
C
O
D
E
L
_
R
I
A
P
P3_1/TRBO
O
CMOS I/O
P5_4/TRCIOD
NC
O
/
I
 
S
O
M
C
O
C
N
P5_3/TRCIOC
SURROUND_LED
O
CMOS I/O
P1_6/CLK0/(SSI)
POWER STBY_LED
O
CMOS I/O
P1_5/RXD0/(TRAIO)/(INT1)
POWER ON_LED
O
CMOS I/O
P1_4/TXD0
O
/
I
 
S
O
M
C
O
0
S
_
N
I
P1_3/KI3/AN11/(TRBO)
O
/
I
 
S
O
M
C
O
1
S
_
N
I
P1_2/KI2/AN10/TRCIOB
T
U
P
N
I
-
F
E
R
V
VREF/P4_2
SAP_SOFT MUTE
O
CMOS I/O
P1_1/KI1/AN9/TRCIOA/TRCTRG
O
/
I
 
S
O
M
C
O
Y
A
L
E
R
_
C
D
P1_0/KI0/AN8
SYS_PROTECT
I
CMOS I/O
NEED
P3_3/INT3/SSI/TRCCLK
O
/
I
 
S
O
M
C
O
/
I
A
D
S
NEED
P3_4/SDA/SCS/(TRCIOC)
O
/
I
 
S
O
M
C
O
+
L
O
V
_
T
B
P0_7/AN0
O
/
I
 
S
O
M
C
O
-
L
O
V
_
T
B
P0_6/AN1
O
/
I
 
S
O
M
C
O
P
U
E
K
A
W
_
T
B
P0_5/AN2/CLK1
1
D
E
L
_
T
B
P0_4/AN3/TREO
O
/
I
 
S
O
M
C
I
Y
E
K
_
R
E
W
O
P
NEED
P0_3/AN4
O
/
I
 
S
O
M
C
I
1
_
Y
E
K
NEED
P0_2/AN5
(A/D)
O
/
I
 
S
O
M
C
I
T
E
D
_
V
E
L
NEED
P0_1/AN6
(A/D)
O
/
I
 
S
O
M
C
I
A
E
R
A
NEED
P0_0/AN7/(TXD1)
(A/D)
32
Note : I - Input, O - Output
OFF
DESTINATION SETTING A/D INPUT
F
F
O
0
3
KEY LINE INPUT DETECTION
F
F
O
1
3
ANALOG INPUT LEVEL DETECTION
F
F
O
8
2
BLUETOOTH OPERATION STATUS, CONNECT 
TO BT Modules' LED1
F
F
O
9
2
POWER KEY INPUT
F
F
O
6
2
BLUETOOTH OPERATION CONTROL, 
CONNECT TO BT Module's BT_DOWN
F
F
O
7
2
BLUETOOTH OPERATION CONTROL, 
CONNECT TO BT Modules' BT_PLAY
F
F
O
4
2
I2C SERIAL DATA BUS LINE
F
F
O
5
2
BLUETOOTH OPERATION CONTROL, 
CONNECT TO BT Module's BT_UP
F
F
O
2
2
DC RELAY CONTROL
H : POWER ON , L : STANDBY
F
F
O
3
2
POWER SUPPLY ABNORMAL DETECTION
H : NORMAL , L : ABNORMAL
F
F
O
0
2
REFERENCE SUPPLY FOR A/D CONVERTER
F
F
O
1
2
SMART AMP SOFT MUTE CONTROL
H : OFF , L : ON
F
F
O
8
1
ANALOG MUX S0 CONTROL
F
F
O
9
1
ANALOG MUX S1 CONTROL
F
F
O
6
1
POWER STANDBY LED CONTROL
H : OFF , L : ON
F
F
O
7
1
POWER ON LED CONTROL
H : ON , L : OFF
F
F
O
4
1
F
F
O
5
1
SURROUND LED CONTROL
H : ON , L : OFF
F
F
O
2
1
PAIRING LED CONTROL
H : ON , L : OFF
F
F
O
3
1
F
F
O
0
1
REMOTE CONTROL SIGNAL INPUT
F
F
O
1
1
DAP MUTE CONTROL
H : OFF , L : ON
F
F
O
8
MCU OPERATING MODE
(CONNECT TO VCC WITH 10K RESISTOR)
F
F
O
9
POWER FAILURE DETECTION INTERRUPT
F
F
O
6
BLUETOOTH OPERATION STATUS, CONNECT 
TO BT Modules' LED2
F
F
O
7
UNSW 3.3V SUPPLY
F
F
O
4
DAP ERROR DETECTION
H : NORMAL , L : ERROR
F
F
O
5
GND
F
F
O
2
DAP RESET CONTROL
H : NORMAL , L : RESET
F
F
O
3
RESET INPUT. ACTIVE IS "L"
I/O
TYPE
SOFT
PULL-UP
GENERAL FUNCTION
F
F
O
1
I2C SERIAL CLOCK BUS LINE
T
U
P
N
I
I
Display
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