Service manual

DEH-3750MP/XU/GS
63
5678
56
7
8
C
D
F
A
B
E
- Pin Functions(PE5454A)
Pin No. Pin Name I/O Format Function and Operation
1 AVREF A power supply Positive power supply(5V)
2 AVSS A power supply GND
3 RFOK O C Output of state of RFOK
4 NC Not used
5 EVDD E power supply Positive power supply
6, 7 NC Not used
8 IC/FLMD0 IC : VSS direct connection/FLMOD0 : Pull-down
9 VDD Positive power supply(5V)
10 REGC Connected to the capacity stabilizing output of the regulator
11 VSS GND
12 X1 I Oscillator connection for mainclock
13 X2 Oscillator connection for mainclock
14 reset I System reset input
15 XT1 I Connected to the oscillator for subclock
(connected to VSS via the resistor)
16 XT2 Connected to the oscillator for subclock(Open)
17 NC Connected to EVDD or EVSS via the resistor
18 NC Not used
19 xint I C CD LSI interruption signal input
20 NC Connected to VSS via the resistor
21 brst I P-Bus reset input
22 BSI I P-Bus serial data input
23 BSO O C P-Bus serial data output
24 bsck I/O /C P-Bus serial clock input/output
25 FTXD O C For flash rewriting output(transmitted signal)
26 FRXD I For flash rewriting input(received signal)
27 BRXEN I/O /C It is possible to receive P-Bus input/output
28 bsrq I/O /C P-Bus service request demand input/output
29 NC Not used
30 DSCSNS I Disc state sense input
31 8EJ(S905) I Input of detection of 8 cm disc ejection
32 12EJ(S904) I Input of detection of 12 cm disc ejection
33 EVSS E power supply GND
34 EVDD E power supply Positive power supply
35, 36 SRAMLEVEL0, 1 O C SRAM level meter output
37 EMPH O C Emphasis information output
38 emph O C Emphasis information output
39-42 NC Not used
43 adena O C A/D reference voltage supply control output
44 LRCKOK O C (DOUT mute output)
45 SRAMLEVEL2 O C SRAM level meter output
46 CD3VON O C CD +3.3V power supply control output
47 CONT O C Servo driver power supply control output
48 xrst O C CD LSI reset control output
49 VDCONT O C VD power supply control output
50 ROMDATA I/O /C E2PROM data input/output
51 ROMCS O C E2PROM chip selection output
52 ROMCK O C E2PROM clock output
53 LOEJ O C The direction change output of LOAD/EJECT
54 CLCONT O C Driver input change output
55 CDMUTE O C CD mute control output
56-58 NC Not used
59 xcs O C CD LSI chip selection output
60 NC Not used
61 xwait I CD LSI write control signal input
62 CLKOUT O C Internal system clock output(Open)
63 LOCK I Spindle lock input
64 NC Not used
65 xwrite O CD LSI write control signal output
66 NC Not used