Technics SJ-HD501 Servise Manual page 51

Pin Mark I/O
No. Division
1 P97 O
2 P96 O
3 P95 O
4 P94 O
5 P93 I
6 P92 I
7 P91 O
8 P90 O
9 CNVSS —
10 P87 O
11 P86 —
12 RESET I
13 XOUT O
14 VSS —
15 XIN I
16 VCC I
17 P85 I
18 P84 I
19 P83 I
20 P82 O
21 P81 O
22 P80
23 P77 I
24 P76 O
25 P75 I
26 P74 O
Function
VR control clock output
terminal
VR control data output
terminal
VR control STB output
terminal
Digital in 1/2 select signal
output terminal ("H": in 1)
Not used, connected to
GND
Chip select input terminal
Request signal output
terminal
Reset signal output
terminal
Flash write signal voltage
(Connected to GND
through resistor)
Power on/off control signal
output terminal
Not used, connected to
GND
Reset signal input terminal
Clock ceramic oscillator
output terminal (f=10MHz)
GND terminal
Clock ceramic oscillator
output terminal (f=10MHz)
Power supply terminal
AC detect terminal
Remote control data input
terminal
Unit load switch signal
input terminal
Audio mute signal output
terminal
Play LED drive signal
output terminal ("L": LED
on)
Not used, connected to
power supply through
resistor
Communication clock
output terminal
Data input terminal
Data output terminal
51