Teac CTM6845, Service Manual

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11
G2/YIN 47 2
nd
G input / Y input
B2/UIN 48 2
nd
B input / U (B-Y) input / P
B
input
BCLIN 49
beam current limiter input
BLKIN 50
black current input / V-guard input
RO 51 Red output
GO 52 Green output
BO 53 Blue output
VDDA 54 analog supply of Closed Caption decoder and digital supply of TV-processor (3.3 V)
VPE 55 OTP Programming Voltage
VDDC 56
digital supply to core (3.3 V)
OSCGND 57
oscillator ground supply
XTALIN 58 crystal oscillator input
XTALOUT 59 crystal oscillator output
RESET 60 reset
VDDP 61 digital supply to periphery (+3.3 V)
P1.0/INT1 62 TV/AV (AV1) / AV2 /S-VHS mode Output.
P1.1/T0 63
TV/AV (AV1) / AV2 /S-VHS mode Output.
P1.2/INT0 64
Remote control signal input.
Note
1. The function of pin 20, 28, 29, 31, 32, 35 and 44 is dependent on the IC version (mono intercarrier 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 subaddress 2BH.
TABLE 1
IC version FM-PLL version QSS version
East-West Y/N N Y N Y
CMB1/CMB0
bits 00 01/10/11 00 01/10/11 00 01/10/11 00 01/10/11
AM bits - - - - - 0 1 - 0 1
Pin 20 AVL EWD AVL EWD
Pin 28 AUDEEM SIFIN1
Pin 29 DECSDEM SIFIN2
Pin 31 SNDPLL SIFAGC
Pin 32 SNDIF(1) REFO(2) AVL/SNDIF(1) REFO(2) AMOUT REFO(2) AMOUT REFO(2)
Pin 35 AUDEXT AUDEXT QSSO AMOUT AUDEXT QSSO AMOUT
Pin 44 AUDOUT Controlled AM or audio out
Note
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 subaddress 28H.
2.
the reference output signal is only available for the CMB1/CMB0 setting of 0/1. for the other settings this pin is a switch
output(see also 5 table 67).
Pin No. 6:
Control keys input (Max. Limit voltage)
AN7522/7523
Function :
audio output
Symbol PIN Function Symbol PIN Function
Vcc 1 Power supply GND 7 ground
Out 1 (+) 2 Ch 1 output (+) In 2 8 Ch 2 input
GND(out 1) 3 Ch 1Ground VOL 9 Volume Control
Out 1 (-) 4 Ch 1 output (-) Out 2 (-) 10 Ch 2 output (-)
Standby 5 Mute input GND(out 2) 11 Ch 2 Ground
In 1 6 Ch 1 input Out 2 (+) 12 Ch 2 output (+)
Note: AN7523 is pin 1 to 9, AN7522 is pin 1 to 12.
Function POWER MENU TV/AV V- V+ P- P+
Voltage 0 0.4125 0.825 1.2375 1.65 2.0625 2.475