Diagrams; Ic Pin Descriptions - Aiwa CDC-R937 Service Manual

CDC-R937/X937

4-1. IC PIN DESCRIPTIONS

• IC241 TC94A09F-303 (DIGITAL SIGNAL SERVO PROCESSOR) (SERVO BOARD)
Pin No. Pin Name
1 – 9 S1 – 9 (OT5 – 13)
10 S10 (OT14/ZDET)
11 S11 (OT15/CLCK)
12 S12 (OT16/DATA)
13 S13 (OT17/SFSY)
14 S14 (DT18/LRCK)
15 P8-0 (S15/BCK)
16 P8-1 (S16/AOUT)
17 P8-2 (S17/MBOV)
18 P8-3 (S18/IPF)
19 MVDD1
20 MVSS
21 LMT SW
22 P1-1 (K1)
23 P1-2 (K2)
24 SW3
25 SRQ
26 LM CONT
27 P3-2 (ADIN2)
28 P3-3 (ADIN3)
29 P4-0 (BUZR/AD4)
30 DATA IN
31 DATA OUT
32 CLOCK
33 P2-0/EMPH
34 P2-1/HSO
35 P2-2/LRCK
36 P2-3/DATA
37 IN1/BCK
38 TESTC
39 DT19 (/HSO)
40 DT20 (SPCK)
41 DT21 (SPDA)
42 DT22 (COFS)
43 DOUT
44 SBSY
45 SBOK
46 VDD1
47 VSS1
48 P2VREF
49 PDO
50 TMAX
51 LPFN
52 LPFO
53 PVREF
54 VCOF
55 AVSS
56 SLCO
57 RFI
58 AVDD
59 RFCT
16
SECTION 4

DIAGRAMS

I/O
O LCD segment signal output/Output port Not used. (Open)
O LCD segment signal output/Output port/CD signal Not used. (Open)
O LCD segment signal output/Output port/CD signal Not used. (Open)
O LCD segment signal output/Output port/CD signal Not used. (Open)
O LCD segment signal output/Output port/CD signal Not used. (Open)
O LCD segment signal output/Output port/CD signal Not used. (Open)
I/O I/O port/LCD segment signal output/CD signal Not used. (Open)
I/O I/O port/LCD segment signal output/CD signal Not used. (Open)
I/O I/O port/LCD segment signal output/CD signal Not used. (Open)
I/O I/O port/LCD segment signal output/CD signal Not used. (Open)
— Power supply pin (+5 V)
— Ground pin
I Limit switch signal input
I Key signal input
I Key signal input
I Key signal input
I CDS SRQ signal input
O Loading motor speed control signal output
I/O I/O port/AD analog voltage signal input Not used. (Open)
O Mute signal output
I/O I/O port/AD analog voltage signal input/buzzer signal output Not used. (Open)
I CDS serial data signal input
O CDS serial data signal output
I/O CDS serial clock signal input/output
I/O Emphasis signal input/output
I/O I/O port/1 bit DAC input Not used. (Open)
I/O I/O port/1 bit DAC input Not used. (Open)
I/O I/O port/1 bit DAC input Not used. (Open)
I Input port/1 bit DAC input Connect to ground.
I Test mode control input Not used. (Open)
O Output port/CD control signal output Not used. (Open)
O Output port/CD control signal output Not used. (Open)
O Output port/CD control signal output Not used. (Open)
O Output port/CD control signal output Not used. (Open)
O Digital out signal output Not used. (Open)
O Sub code block sync signal output Not used. (Open)
O Sub code Q data signal output Not used. (Open)
— Power supply pin (+5 V)
— Ground pin
— PLL 2 voltage reference pin
I EFM/PLCK signal difference error signal input
I TMAX detect signal input
I Inversion signal input of amplifier for lowpass filter
O Signal output of amplifier for lowpass filter
I PLL voltage reference input
O VCO filter signal output
— Ground pin
O DAC signal output
I RF signal input
— Power supply pin (+5 V)
I RFRP signal center level input
Pin Description