akira CT-21CDP5CPT, Service Manual

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Model no.:CT-21CDP5CPT.doc
version 1.0
30
Pinning
SYMBOL PIN DESCRIPTION
P3.1/ADC1/PWM1 6 port 3.1 or ADC1 input or PWM1 output
P3.2/ADC2/PWM2 7 port 3.2 or ADC2 input or PWM2 output
P3.3/ADC3/PWM3 8 port 3.3 or ADC3 input or PWM3 output
VSSC/P 9 digital ground for -Controller core and periphery
P0.5 10 port 0.5 (8 mA current sinking capability for direct drive of LEDs)
P0.6/C VBSTD 11
port 0.6 (8 mA current sinking capability for direct drive of
LEDs)
or
Composite video input. A positive-going 1 V(peak-to-peak)
input is required
VSSA 12 digital ground of TV-processor
SECPLL 13 SE CAM PLL decoupling
VP2 14 2nd supply voltage TV-processor (+8V)
DECDIG 15 supply voltage decoupling of digital circuit of TV-processor
PH2LF 16 phase-2 filter
PH1LF 17 phase-1 filter
GND3 18 ground 3 for TV-processor
DECBG 19 bandgap decoupling
AVL/EWD (1)
20
Automatic Volume Levelling (90versions)/ E-W drive output
(110versions)
VDRB 21 vertical drive B output
VDRA 22 vertical drive A output
IFIN1 23 IF input 1
IFIN2 24 IF input 2
IREF 25 reference current input
VSC 26 vertical sawtooth capacitor
AGCOUT 27 tuner AGC output
SIFIN1/A UDEEM
(2)
28 SIF input 1 / audio deemphasis
SIFIN2/DECSDEM
(2)
29 SIF input 2 / decoupling sound demodulator
GND2 30 ground 2 for TV processor
SNDPLL/SIFA GC
(2)
31 narrow band PLL / AGC sound IF
AVL/REF0/SNDIF/
AMOUT (2) 32 Automatic Volume Levelling / subcarrier reference output /
sound IF input /
AM output
HOUT 33 horizontal output
FBISO 34 flyback input/sandcastle output
QSSO/AMOUT/ 35 QSS intercarrier output / AM output / external audio input