Sanyo AVM-1420MA Service Manual page 11

UOC TDA93XX
SYMBOL
STAND BY output.
SCL
SDA
TUNING
P3.0/NTSC SW
KEY
VOL
MUTE
VSSC/P
BAND1
BAND2
VSSA
SECPLL
VP2
DECDIG
PH2LF
PH1LF
GND3
DECBG
AVL/EWD
VDRB
VDRA
IFIN1
IFIN2
IREF
VSC
TUNER AGC
AUDEEM/SIFIN1 *1
DECSDEM/SIFIN2
GND2
SNDPLL/SIFAGC *1
AVL/SNDIF/REF0/
AMOUT *1
HOUT
FBISO
AUDEXT/QSSO/
AMOUT *1
PIN
1 In STAND BY mode, high level (Power OFF).
For Power ON this pin will be reduced to low.
2
2 I C-bus clock line
2
3 I C-bus data line
4 tuning Voltage (Vt) PWM output
5 Port 3.0 or NTSC output/SCART SW input, Forced NTSC selection,
Low-level output, otherwise High output.
6 Control keys input *3
7 Sound Volume control PWM output
8 Sound mute output
9 Digit ground for μ-controller core and periphery
10 Tuner Band selection output
11 Tuner Band selection output
12 Analog ground of teletext decoder and digital ground of TV-processor
13 SECAM PLL decoupling
nd
14 2 supply voltage TV-processor(+8V)
15 decoupling digital supply of TV-processor
16 Phase-2 filter
17 Phase-1 filter
18 Ground 3 for TV-processor
19 Band gap decoupling
20 Automatic volume leveling /EAST-WEST drive output
21 Vertical drive B output
22 Vertical drive A output
23 IF input 1
24 IF input 2
25 Reference current input
26 Vertical sawtooth capacitor
27 Tuner AGC output
28 Audio deemphasis or SIF input
29
decoupling sound demodulator or SIF input 2
30
ground 2 for TV processor
31
narrow band PLL filter or AGC sound IF
32
Automatic Volume Levelling / sound IF input / subcarrier reference output / audio
deemphasis
33
horizontal output
34
flyback input/sandcastle output
35
external audio output / QSS intercarrier out
DESCRIPTION
11