Ic Pin Function Description - Sony CFD-S28L Service Manual

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6-12. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 CXP83620-007Q (SYSTEM CONTROLLER)
Pin No. Pin Name
1 C-SCOR
2 RMC
3, 4 NC
5 C-SENS
6 C-SENS2
7 C-SQCK
8 C-SQSO
9 C-RST
10 C-CLOCK
11 C-LATCH
12 C-DATA
13 REC
14 R-COUNT
15 R-DATA
16 R-CLOCK
17 R-LATCH
18 V-LATCH
19 V-DATA
20 V-CLOCK
TE
L 13942296513
21 P-CON
22 NC
23 KEY1
24 KEY2
25 KEY3
26 NC
27 INIT
28 MODE CHECK
29 SHIFT CLOCK
30 RST
31 EXTAL
32 XTAL
33 VSS
34 VL
35 to 37 VLC3 to VLC1
38 to 41 COM0 to COM3
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42 to 64 SEG0 to SEG22
65 NC
66 A-MUTE
.
67 B-MUTE
68 C-MUTE
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I/O
I Subcode sync (S0+S1) detection signal input from the CXD2589Q (IC703)
I Sircs remote control signal input terminal Not used (open)
O Not used (open)
I Internal status signal (sense signal) input from the CXD2589Q (IC703)
I Internal status signal (sense signal) input from the CXA1992BR (IC701)
O Subcode Q data reading clock signal output to the CXD2589Q (IC703)
I Subcode Q data input from the CXD2589Q (IC703)
O System reset signal output to the CXA1992BR (IC701) and CXD2589Q (IC703) "L": reset
O Serial data transfer clock signal output to the CXD2589Q (IC703)
O Serial data latch pulse signal output to the CXD2589Q (IC703)
O Serial data output to the CXD2589Q (IC703)
I Record/playback detection signal input terminal "L": recording mode, "H": playback mode
I PLL serial data input from the FM/AM PLL (IC2)
O PLL serial data output to the FM/AM PLL (IC2)
O PLL serial data transfer clock signal output to the FM/AM PLL (IC2)
O PLL serial data latch pulse signal output to the FM/AM PLL (IC2)
O Serial data latch pulse signal output to the electrical volume (IC302)
O
Serial data output to the electrical volume (IC302)
O
Serial data transfer clock signal output to the electrical volume (IC302)
Power on/off control signal output to the power supply circuit and power amplifier (IC303 and
O
IC304) "L": standby mode, "H": power on
O Not used (open)
Key input terminal (A/D input) S601 to S607 (OPERATE, SLEEP, TIMER, MEGA BASS,
I
VOLUME +/–, SOUND keys input)
Key input terminal (A/D input)
I S609 to S614 (CD ·∏, π, TIME SET + + TUNE +, TIME SET – = TUNE –, PLAY
MODE MONO/ST ISS, DISPLAY ENT MEMORY keys input)
Key input terminal (A/D input) S617 to S624 (RADIO BAND, STANDBY, CLOCK, PRESET
I
+/–, FUNCTION, LOOP AUTO PRESET, FLASH keys input)
O Not used (open)
O Initial setting signal output terminal Used for the except CIS model
I Destination setting terminal
O Shift clock output of the main system clock (4.19 MHz) "H" active
System reset signal input from the reset signal generator (IC503) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I Main system clock input terminal (4.19 MHz)
O Main system clock output terminal (4.19 MHz)
— Ground terminal
—
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
—
O
Common drive signal output to the liquid crystal display (LCD501)
O Segment drive signal output to the liquid crystal display (LCD501)
x O ao Not used (open) u163
y
O Audio muting on/off control signal output to the electrical volume (IC302) "H": muting on
i
O Tuner muting on/off control signal output terminal "H": muting on
O Digital muting on/off control signal output to the CXD2589Q (IC703) "H": muting on
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2 9
8
Description
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3 6 7 1 3 1 5
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9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
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