Ic Description - Aiwa LCX-257 Service Manual Digest

IC DESCRIPTION

IC, LC877248A-5R02
Pin No. Pin Name
1 O-ARDY
2 O-SREQ
3 O-SOUT
4 I-SIN
5 I-ACLK
6 I-MREQ
7 NC (SELECT)
8 O-PCONT
___________
9 I-HOLD
10 O-CLKSFT
11 I-RESET
12 XT1
13 XT2
14 VSS1
15 CF1
16 CF2
17 VDD1
18 I-JOGA
19 I-JOGB
20 I-KEY1
21 I-KEY
22 I-RDSIG
23 I-CTON
24 I-RDDT
25 I-COLOR
26 I-TMBASE
27 I-INIT
28 I-RDCL
29 I-RMC
30 I-CTPLAY
31 I-CTREC
32 O-TUCONT
33 O-TUCE
34 O-TUDI
35 O-TUCL
36 I-TUDO
_________________
37 I-STEREO
38 NC
39-53 S9-S23
54 VDD2
55 VCC2
I/O
O
O
O
Not connected.
I
I
I
O Pull down.
O Main power control.
I Hold status detection.
O Clock shift control.
I Reset terminal.
I Connected to VDD.
O Not connected.
— GND.
I External ceramics oscillator (5.76 MHz) is connected to this pin (input).
O External ceramics oscillator (5.76 MHz) is connected to this pin (output).
— Power supply positive polarity (+) terminal.
I Jog dial detection A.
I Jog dial detection B.
I
Tact key, AD input detection.
I
I RDS signal level input, AD input.
I CT DECK power supply detection.
I RDS data input.
I LCD back light initial setting input.
I 8Hz clock reference frequency input.
I Tuner destination, initial setting input.
I RDS clock input.
I Remote controller receptor signal input.
I CT DECK PLAY detection.
I CT DECK REC detection.
O Tuner power supply control.
O Tuner, Chip enable output for PLL communication.
O Tuner, Serial data output for PLL communication.
O Tuner, Clock output for PLL communication.
I Tuner, Serial data input for PLL communication.
I Tuner stereo reception detection.
— Not connected.
O LCD SEG terminal initial setting output. (No.43-29)
— Power supply positive polarity (+) terminal.
— GND.
38
Description