Ic Pin Function Description - Sony SS-CEP515 Service Manual

HCD-EP515

6-11. IC Pin Function Description

• IC801 LC877356A-51E1 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 TU MUTE
2 MD LED
3 TU DO
4 TU DI
5 TU CLK
6 TU CE
7 RDS DATA
8 TA ENDSW
9 CD PWM1
10 CD PWM2
11 RESET
12 XT1
13 XT2
14 VSS1
15 CF1
16 CF2
17 VDD1
18 I POWER MONITOR
19 KEY0
20 KEY1
21 AREA
22 VOL ENCODER
23 I POWER DOWN
24 TA-SW
25 CLK SHIFT
26 RDS CLOCK
27 CD SCOR
28 TA SOL
29 RMC
30 TA R/P
31 CD DATA
32 CD XLT
33 CD CLK
34 CD ON
35 CD SQCK
36 CD SENS
37 CD SQSO
38 TU STEREO
39 TA PLAYSW
40 ST/BY
41 TA LED
42 TU LED
43 CD LED
44 NC
45 to 53 SEG
54 VDD2
55 VSS2
56 to 79 SEG
80 to 82 LCD BIAS3 to 1
83 to 86 LCD COM0 to 3
28
I/O
O Muting signal output to the tuner
O MD LED control signal output
O Data output to the tuner
I Data input from the tuner
O Clock signal output to the tuner
O Tuner chip enable signal output to the tuner
I RDS data input from the tuner
I Tape deck reel switch signal input
O PWM1 signal output to the CD unit
O PWM2 signal output to the CD unit
I Reset signal input from the reset IC (IC803)
I Resonator terminal (32.768kHz)
O Resonator terminal (32.768kHz)
— Ground terminal
I Resonator terminal (8.64MHz)
O Resonator terminal (8.64MHz)
— Power supply terminal
I AC power detection signal input
I Key AD input 0
I Key AD input1
I Destination setting terminal
I Encoder signal input from the volume encoder
I Power down detection signal input
I Tape switch status signal input from the tape deck
O Clock shift control signal output
I RDS clock input from the tuner
I SCOR (SUBQ request) signal input from the CD unit
O Solenoid control signal output to the tape deck
I Remote sensor signal input
O REC/PLAY control signal output to the REC/PLAY switch circuit
O Data output to the CD unit
O Latch signal output to the CD unit
O Clock output to the CD unit
O CD power supply control signal output
O SUBQ clock output to the CD unit
I SENS signal input from the CD unit
I SUB-Q data input from the CD unit
I Stereo/mono detection signal input from the tuner
I Play switch signal input from the tape deck
O STANDBY LED control signal output
O TAPE LED control signal output
O TUNER LED control signal output
O CD LED control signal output
— Not used (open)
O Segment signal output to the liquid crystal display module
— Power supply terminal
— Ground terminal
O Segment signal output to the liquid crystal display module
— Output bias power supply terminal for the liquid crystal display module
O Common signal output to the liquid crystal display module
Description