X-W320
4
CIRCUIT DESCRIPTION
1-2 Pin description
Pin No.
Pin Name
I/O
Description
Action
1~7
G7~G1
O
FL tube grid signal output (G7~G1)
8
VDD
SUPPLY (+5V)
9
CLK
O
System IC clock output
10
STB
O
System IC strobe signal input
H
11
DATA
O
System IC serial data output
H/L
12
HXPRO
O
HX-PRO bias switching
L : ON
L
13
PLAY B/A
O
B/A Head switching
H : B
H/L
14
DOLBY ON
O
DOLBY ON/OFF
H
15
DOLBY C/B
O
DOLBY C/B
H
16
MPX
O
MPX FILTER OFF/ON
L
17
RST
I
Reset signal input
L
18
CPMA
O
A capstan motor ON
H
19
CPMB
O
B capstan motor ON
H
20
AVss
GND
21
PHA
I
A mecha rotation detection
L
22
PHB
I
B mecha rotation detection
L
23
A PACK
I
A tape detection input
H
24
B PACK
I
B tape detection input
H
25
A CrO2
I
A mecha CrO2 tape detection
H
26
B CrO2
I
B mecha CrO2 tape detection
H
27
LEVEL L
I
CCRS, DPSS Lch signal input
28
LEVEL R
I
CCRS, DPSS Rch signal input
29
AVDD
ANALOG SUPPLY (+5V)
30
AVREF
FOR ADC
31, 32
XT1, XT2
OPEN
33
Vss
GND
34
X1
I
Clock oscillator
35
X2
I
Clock oscillator
36
CSPB
O
B-Capstan motor speed High/Nor
H/L
37
B BIAS
O
B Bias ON/OFF
H : ON
H
38
B Mecha R/P
O
B REC/PLAY switching
H : REC
H
39
F REC
I
A-Fool Proof FWD
L : REC OK
H
40
R REC
I
A-Fool Proof BWD
L : REC OK
H
41
CSP A
O
A-capstan motor speed High/Nor
H/L
42
SOLB
O
B solenoid ON
H
43
SOLA
O
A solenoid ON
H
44
EQ SP
O
45
S DATA
I/O Serial data input output
H/L
46
S BUSY
I/O Serial busy input output
H/L
47
CE
I
System Stop
L
48
IC
Connect to VSS
49
LINE MUTE
O
Line mute control
H
50
REC MUTE
O
Rec mute control
H
51
BIAS NORMAL
O
HX-PRO Bias switching
H : NOR
H
52
VDD
Supply (+5V)
53
B PLAY SW
I
B-Mecha Mode SW
L : PLAY
L
54
A PLAY SW
I
A-Mecha Mode SW
L : PLAY
L
55
EQ 70/120
O
EQ switching
H : 70us
H
56
OTE
O
OTE LED Indicator
L
57~60
KR3~0
I
Key return signal input(KR3~0)
61
70HSP
O
EQ SP HIGH & BIAS 70us
62~70
SA~SI
O
FL tube grid signal output(SA~SI)
71
VLOAD
FL tube driving voltage(-30V)
72~77
SJ~SO
O
FL tube segment signal output
78
IC
O
Supply (+5V) to FL
79,80
G9,G8
O
FL tube grid signal output
X-W320(K) COVER( 97.11.29 4:37 AM y[W 7
