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• IC502 MB90574PMT-G-264-BND (SYSTEM CONTROL) (MAIN BOARD)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TE
L 13942296513
15
16
17
18
19
20
21
22, 23
24
25
26
27
28
29
30
www
31
32
33
.
34
35
36
http://www.xiaoyu163.com
Pin Name
I/O
NIL
I
Not used (fixed at "L")
Input terminal of whether a music is present or not is detected at auto music sensor
AMSIN
I
"L": music is not present, "H": music is present Not used (fixed at "L")
Tape auto music sensor control signal output terminal
AMSON
O
"L" is output to lower the gain for audio level at FF/REW mode Not used (open)
Serial data latch pulse output for spectrum analyzer section to the liquid crystal
SP LAT
O
display drive controller (IC701)
ATT
O
Audio line muting on/off control signal output terminal "L": muting on
System reset signal output to the MD mechanism controller (IC501), liquid crystal
SYSRST
O
display drive controller (IC701) and SONY bus interface (IC601) "L": reset
Tape detection signal output terminal "L": reverse side, "H": forward side
F/R
O
Not used (open)
VCC
—
Power supply terminal (+5 V)
MTLIN
I
Auto metal detection signal input terminal Not used (fixed at "L")
E2PSIO
I/O
Two-way data bus for tuner EEPROM with the FM/AM tuner unit (TUX201)
E2PCKO
O
Tuner EEPROM bus clock signal output to the FM/AM tuner unit (TUX201)
Input terminal at the flash memory data write mode
FLS SI
I
Front panel open/close detection signal input terminal
"L" is input when the front panel is closed
Output terminal at the flash memory data write mode
FLS SO
O
Display serial data output to the liquid crystal display driver (IC901)
Bus on/off control signal output to the CD mechanism controller (IC5), liquid crystal
BUS-ON
O
display drive controller (IC701) and SONY bus interface (IC601) "L": bus on
BEEP
O
Beep sound drive signal output terminal
NCO
O
Not used (open)
UNISI
I
Serial data input from the SONY bus interface (IC601)
UNISO
O
Serial data output to the SONY bus interface (IC601)
Serial clock signal output to the CD mechanism controller (IC5), liquid crystal
UNICKO
O
display drive controller (IC701) and SONY bus interface (IC601)
Tuner wide/narrow select signal input terminal "L": wide, "H": narrow
IFWIDTH
I
Not used (fixed at "L")
When the radio is tuned at the frequency to produce beats, shift the frequency of the
SWSHIFT
O
signal from the D/D converter so as to produce no beats.
NCO
O
Not used (open)
SIRCS
I
Sircs remote control signal input from the remote control receiver (IC951)
DSPSI
I
Serial data input from the CXD2726Q (IC805)
DSPSO
O
Serial data output to the CXD2726Q (IC805)
Serial data transfer clock signal output to the CXD2726Q (IC805) and liquid crystal
DSPCKO
O
display drive controller (IC701)
PLL clock control signal output to the CXD2726Q (IC805)
DSPPLL
O
At "L" is output: fixed at "L" is PLCLK (pin ia of IC805 CXD2726Q )
At "H" is output: PLL clock signal output to the PLCLK (pin ia of IC805 CXD2726Q)
Bit clock (BCK) and L/R sampling (LRCK) signal master/slave mode selection signal
DSPMST
O
output to the CXD2726Q (IC805) "L": master mode, "H": slave mode
NCO
O
Not used (open)
Pre amplifier muting on/off control signal output to the electrical volume (IC301)
VOLATT
O
"L": muting on
x
ao
TU ATT
O
Muting on/off control signal output of the FM/AM tuner signal "L": muting on
y
VSS
—
Ground terminal
i
C
—
Connected to coupling capacitor for the power supply
DSPLAT
O
Serial data latch pulse output to the CXD2726Q (IC805)
DSPRST
O
Reset signal output to the CXD2726Q (IC805) "L": reset
http://www.xiaoyu163.com
8
Q Q
3
6 7
1 3
u163
.
2 9
9 4
2 8
Pin Description
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9
25
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