akira CT-14XA9A, Service Manual

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34
Model No: CT-14XA9A
Version 1.0
SYMBOL PIN DESCRIPTION
CVBS/Y 42 external CVBS/Y input
CHROMA 43 chrominance input (SVHS)
AUDOUT/AMOUT
(1)
44 audio output/AM audio output (volume controlled)
INSSW2 45
2
nd
RGB/YUV insertion input
R2/VIN 46 2
nd
R input/V (R-Y) input
G2/YIN 47 2
nd
g input/U input
B2/UIN 48 2
nd
B input/U (B-Y) input
BCLIN 49 beam current limiter input/(V-guard input, note2)
BLKIN 50 black current input/(V-guard input, note2)
RO 51 Red output
GO 52 Green output
BO 53 Blue output
VDDA 54 analog supply of Teletext decoder and digital supply of TV-
processor (3.3V)
VPE 55 OTP programming Voltage
VDDC 56 digital supply to core (3.3V)
OSCGND 57 oscillator ground supply
XTALIN 58 crystal oscillator input
XTALOUT 59 crystal oscillator output
RESET 60 reset
VDDP 61 digital supply to periphery (+3.3V)
P1.0/INT1 62 port 1.0 or external interrupt 1 input
P1.1/TO 63 port 1.1 or Counter/Timer 0 input
P1.2/INTO 64 port 1.2 or external interrupt 0 input
Notes
1. The function of pin 20, 28, 29, 31, 32, 35 and 44 is dependent on the IC version (mono inter
carrier FM demodulator/QSS IF amplifier and East-West output or not) and on some software
control bits. The valid combinations are given in table 1.
2. The vertical guard function can be controlled via pin 49 or pin 50. The selection is made by
means of the IVG bit in sub address 2BH.
IC
version
FM-PLL version QSS Version
East-
West
Y/N
N Y N Y
CMB1/
CMBO
bits
00 01/10/11 00 01/10/11 00
01/10/
11
00 01/10/11
AM bit
- - - - - 0 1 - 0 1
Pin 20
AVL EWD AVL EWD
Pin 28
AUDEEM SIFIN1
Pin 29
DECSDEM SIFIN2
Pin 31
SNDPLL SIFAGC
Pin 32
SNDIR
(1)
REFO
(2) AVL/SNDIF
(1)
REFO (2)
AMOUT
REFO
(2)
AMOUT
REFO(2)
Pin 35
AUDEXT AUDEXT QSSO AMOUT AUDEXT ESSO AMOUT
Pin44 AUDOUT controlled AM or audio out
Notes
1. When additional (external) selectivity is required for FM-PLL system pin 32 can be used as
sound IF input. This function is selected by means of SIF bit in sub address 28H.
2. The reference output signal is only available for the CMB 1/CMBO setting of 0/1. For the
other settings this pin is a switch output.