Diagrams; Ic Pin Description - Sony MD Walkman MZ-E33 Service Manual

6-1. IC PIN DESCRIPTION

• IC801 RU6815MF-0004 (SYSTEM CONTROL)
Pin No. Pin Name
1 HIDC MON
2 UREG MON
3 CHG MON
4 VREF
5 PLAY KEY
6 OPEN CLS SW
7 RMC KEY
8 SET KEY
9 XRESET
10 AVDD
11 AVSS
12 TYPE 0
13 TYPE 1
14 TYPE 2
15 TYPE 3
16 HOLD SW
17 VREG CON
18
19
20 MCK
21
22 VDD
23 VSS
24
25 VSS
26 AVLS SW
27 DSP SINT
28 DBB 0
29 DBB 1
30 OPR LED
31 XWK CLR
32 ADJUST
33 SLEEP
34 SBUS CLK
35 SBUS DATA
36
37 SLD 1 MON
38 SLD 2 MON
39 CLV VCON
40 APC REF
41 V28-CON
42 CLV U MON
43 CLV V MON
44 CLV W MON
45 CLV U CON
46 CLV V CON
47 CLV W CON
SECTION 6

DIAGRAMS

I/O
I HIDC voltage monitor input.
I Unreg voltage monitor input.
I CHG voltage monitor input.
I Reference voltage for power supply voltage adjustlment.
I Set PLAY key input.
I DOOR OPEN/CLOSE switch input.
I Remote commander key input.
I Set key input.
I Systen reset input (At reset : "L" ).
— A/D converter power supply (+2.8V).
— A/D converter Ground.
I Model discrimination terminal (Fixed at "L" ).
I Model discrimination terminal (Fixed at "H" ).
I Model discrimination terminal (Fixed at "L" ).
I Model discrimination terminal (Fixed at "L" ).
I Set HOLD switch input.
O 2.5V voltage on/off switch (Sub terminal) (not used).
— Not used (Open).
— Not used (Open).
I Master clock input.
— Not used (Open).
— Digital power supply (+2.8V).
— Digital Ground.
— Not used (Open).
— Digital Ground.
I Set AVLS switch input.
I Interrupt input from DSP.
I DIGITAL MEGABASS switch input (MID).
I DIGITAL MEGABASS switch input (MAX).
O LED drive output.
O Power IC wakeup factor latch clear output and motor driver IC control signal outpt.
I "Normally" Test mode select input ("L" : Test mode)
O Power supply circuit OFF signal output.
O SBB serial clock output.
O SBB serial data output.
— Not used (Open).
I Sled servo timing signal input.
I Sled servo timing signal input.
O Spindle servo drive voltage control output.
O Laser power control output.
O Power voltage (+2.8V) correction control output.
I Spindle servo timing signal input.
I Spindle servo timing signal input.
I Spindle servo timing signal input.
O Spindle servo drive signal output.
O Spindle servo drive signal output.
O Spindle servo drive signal output.
– 13 –
Pin Description
L : Close