Hitachi C21-FL21F User Manual

Note 1 : Abbreviation of pin configulation mode : O.D. Open Drain
Q.B. Quasi-Bidirectional
H.I. High-Impedance
P.P. Push-Pull
Note 2 : During reset all pins are Quasi-Bidirectional mode.
Tuner and IF
The Tuner (U001)used on V3AR chassis is powered up by the 5V supply. It is IIC bus controlled and covers VHF, UHF,
CATV Band (Mid, super, and hyper).
The IF output from Tuner ( pin 11 of U001) is applied to the amplifier Q201.
For multi-system model with M-NTSC, switchable saw filter is used. Q001 at pin 2 of X003 servers to select the IF
signal between M/N mode to other modes ( e.g. B/G, D/K ) before demodulation is carried out at I001.
i.e. at M mode: Base of Q001 High
I001 (TDA9381/9386/9365) besides begin the microcontroller, incorperates video / chroma / deflections /
teletext features and video/audio switching. It performs auto color identification of PAL/SECAM/NTSC, sync
separation , AFC, HV oscillator and output RGB signals.
- 8 -
Function
numbe
r
name mode
Pin Signal
I/O
Configuration
Digital supply to core (3.3V
)
57 OSDGND - - Oscillator ground suppl
y
56 VDDC - -
58 XTA/IN Inpu
t
-
59 XTA/OUT Outpu
t
-
60 RESET Inpu
t
-
61 VDDP - -
62 SCL(EEP) I/O
I/O
Data of secondary I
2
C-bus for EEPROM
64 RC-In Inpu
t
Input for Remote control decodin
g
O.D. 3.3V
Clock of secondary I
2
C-bus for EEPROM
3.3V
3.3
V
O.D.
H.I.
63 SDA(EEP)
Rese
t
Digital supply to periphery (+3.3 V
)
Crystal Oscillator inpu
t
Crystal Oscillator outpu
t

Hitachi C21-FL21F Specifications

General

Brand	Hitachi
Model	C21-FL21F
Category	TV
Language	English