Hitachi C21-FL21F User Manual

CIRCUIT DESCRIPTION
Selection and CPU circuitry
IC type, TDA9381/86/65 performs functions like IIC controls, channel selection, on-screen display ,search
tuning, systems selection amongst others. The pin's functions of TDA9381/86/65 are presented in the table shown
below.
P.P. 3.3
V
O.D. 5
V
O.D. 5
V
O.D. 5
V
O.D. 3.3
V
H.I. 5
V
O.D. 5
V
H.I. 3.3
V
O.D. 3.3
V
O.D. 3.3
V
O.D. 3.3
V
- 6 -
Inpu
t
23 IFIN1
24 IFIN2
IF input 1
- IF input 2
-Inpu
t
Phase-2 filte
r
Phase-1 filte
r
Ground 3 for TV-processo
r
Bandgap decoupling
East-West drive outpu
t
Vertical drive B outpu
t
Digital ground for µ-controller core and peripher
y
LED Drive
1 = Mute on, 0 = Mute off (Under Standby
)
A
nalog ground of Teletext decoder and digital groun
d
of TV-processo
r
SECAM PLL decoupling
-
1 = M, 0 = Others
Detect for S-VHS (not mono chassis
)
FE/AV switch (mono chassis)
Local analogue keyboar
d
1 = Video:2, 0 = Video:1
Clock of main I
2
C - bus
Data of main I
2
C - bus
PWM output for Beep sound
2
nd
supply voltage TV-processor (+8V)
0 = Stand-by, 1 = On
-
-
-
-
-
-
-
Decoupling digital supply of TV-processo
r
Vertical drive A outpu
t
-
Outpu
t
Outpu
t
Outpu
t
Outpu
t
Outpu
t
-
-
-
-
Outpu
t
VP2
DECDIG
PH2LF
-
Outpu
t
Outpu
t
Inpu
t
Outpu
t
Inpu
t
I/O
I/O
PH1LF
T
V
DECBG
Outpu
t
SW FE/A
V
20
21
VSSC/P
Led
ON/OFF Mute
VSS
A
AVL/EWD
VDRB
Powe
r
SCL
14
15
Key - In
V2/V1
SECPLL
Alarm
SAW S
w
AV S-DET
18
19
22 VDR
A
-
-
-
-
-
11
9
10
16
17
-
-
2
1
4
5
6
7
Pin
numbe
r
12
3SD
A
13
8
Signal
I/O
name mode
Function
Configuration

Hitachi C21-FL21F Specifications

General

Brand	Hitachi
Model	C21-FL21F
Category	TV
Language	English