Circuit Description - Kenwood RXD-501 Service Manual

4-2 Pin description
Microprocessor : M38199MF-075FP (X09, IC10)
No Name
1 PS IN
2 PS LOAD
3 A MUTE
4 BP IN
5 JOG CW
6 JOG CCW
7 ENC CW
8 ENC CCW
9 H.P.
10 NC
11 CD RST
12 DRV CLK
13 DRV SI
14 DRV SO
15 S LEVEL
16 RDS DATA
17,18 NC
19 CD CK
20 SQCK
21 CDDT
22 SQSO
23 CDXL
24 SENS
25 CDSCK
26 LD ON
27 DATA
28 CLK
29 PROT
30 SCOR
31 E DATA
32 E CLK
33 NC
34 RDS CLK
35 RESET
36 X CIN
37 X COUT
38 X IN
39 X OUT
40 VSS
41 PLL DO
42 STEREO
43 SD
44 CE
45 PLL CE
46 TU EMP
47 FL RST

CIRCUIT DESCRIPTION

I/O
I Parallel serial IC input data
O Parallel serial IC load
O Audio mute control
I Speana input (A/D converter input)
I Jog input B
I Jog input A
I Rotary encoder input B
I Rotary encoder input A
I Headphones switch input
I/O No used
O CD DSP IC reset control (CXD2587Q)
O FL driver u-COM control clock
O FL driver u-COM control data output
I FL driver u-COM control data input
I RDS S Level input
I RDS data input
I No used
O CD DSP IC clock (CXD2587Q)
O CD Sub code clock (CXD2587Q)
O CD DSP IC data (CXD2587Q)
I CD Sub code input (CXD2587Q)
O CD latch output (CXD2587Q)
I CD sense input (CXD2587Q)
O Sense data reading clock output (CXD2587Q)
O CD laser output
O SELECTOR/SYSTEM/DAC/DOLBY IC data output
O SELECTOR/SYSTEM/DAC/DOLBY IC clock output
I Protection input
I Sub code synchronism signal (CXD2587Q)
O E. vol data output (M62430FP)
O E. vol clock output (M62430FP)
I/O No used
I RDS clock input
I Reset signal input
I Timer clock input (32.768kHz)
O Timer clock output (32.768kHz)
I Main clock input (8.38MHz)
O Main clock output (8.38MHz)
– GND
I PLL data input
I Stereo detector input
I SD detector input
I Power failure input
O PLL IC chip enable (LC72131)
O FM emphasis change-over (M type only)
Polar/Pilot change-over (Q type only)
O FL driver reset control output
RXD-501/551/571/A5/701/751/771/A8
Description
H : SHIFT
H : OFF
H : ON
H : NORMAL
H : OFF
H : PROTECTION ON L : NORMAL
H : NORMAL
H : AC ON
H : 100kHz
H : POLAR
L : LOAD
L : ON
L : OFF
L : RESET
L : ON
L : RESET
L : AC OFF
L : 50kHz
L : PILOT
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