Akai 21CTU93BC Service Manual download pdf (Page 19)

ICs functional description

UOC TDA11105-XXXX/TDA11106-XXXX

SYMBOL PIN DESCRIPTION

IF VO 1

IF video output / selected CVBS output

VP2 2 2

Supply voltage TV processor(+5v)

VCC AUDIO 3 8 volt supply for audio switches(+5V~8V)

PLL IF 4

IF-PLL loop filter

GND2 5 Gaound 2 for TV processor

DECSDEM 6

decoupling sound demodulator or SIF input 2

FMDEMOUT 7

audio output /AM audio output (volume controlled)

EHTO 8

EHT/overvoltage protection input

AGC 9 Tuner AGC output

IREF 10 Reference current input

VSC 11 Vertical sawtooth capacitor

IF IN2 12 IF input 1

IF IN1 13 IF input 2

VDRA 14 Vertical drive A output

VDRB 15 Vertical drive B output

AVL/EW 16 Automatic volume leveling /EAST-WEST drive output

DECBG 17 Band gap decoupling

SECPLL 18 SECAM PLL decoupling

GND1 19 Ground 1 for TV-processor

PH1LF 20 Phase-1 filter

PH2LF 21 Phase-2 filter

VP1 22 1

supply voltage TV-processor(+5V)

DECDIG 23 decoupling digital supply of TV-processor

XTALOUT 24

crystal oscillator output

XTALIN 25

crystal oscillator input

IR 26

Remote control signal input.

MUTE 27 Sound mute output

TILT/UHF 28

KEY 29 Control keys input *3

BAND2 30 Tuner Band selection output

BAND1 31 Tuner Band selection output

TUNING 32 tuning Voltage (Vt) PWM output

VDDP 33 Supply to periphery-3.3V)

SDA 34 I

C-bus data line

SCL 35 I

C-bus clock line

AV1 36

TV/AV (AV1) / AV2 mode Control Output.

AV2 37

TV/AV (AV1) / AV2 mode Control Output.

STANDBY 38 In STAND BY mode, high level (Power OFF).For Power ON this pin will

be reduced to low.

50/60 39

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Akai 21CTU93BC Service Manual Page 19

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