2. POP TUNER

TUNER SAW VIF/SIF

SECTION FILTER CIRCUIT

RF AGC

AFT VIDEO AUDIO

OUTPUT OUTPUT OUTPUT

Fig. 2-5

2-1. Outline

The POP tuner (EL922L) consists of a tuner and an IF block integrated into one unit. The tuner receives RF signals in- duced on an antenna and develops an AFT output, video output, and audio output.

The tuner has receive channels of 181 as in the tuner for the main screen and it is also controlled through the I2C-bus.

As the IC for the IF, a PLL complete sync detection plus audio inter carrier system are employed.

Label

Name

Lot No.

115

Terminal No.

Name

 

 

1

NC

 

 

2

32V

 

 

3

S-CLOCK

 

 

4

S-DATA

 

 

5

NC

 

 

6

ADDRESS

 

 

7

5V

 

 

8

RF AGC

 

 

9

9V

 

 

10

AUDIO

 

 

11

GND

 

 

12

AFT

 

 

13

NC

 

 

14

GND

 

 

15

VIDEO

Fig. 2-6 Tuner terminal layout

16

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Image 16
Toshiba TW40F80 manual POP Tuner, Terminal No Name