XOCECO TK2026, Service Manual

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1
MAIN IC 8377:
ICs functional description
UOC TDA(OM)8377
SYMBOL PIN DESCRIPTION
STAND BY output. 1 In STAND BY mode, high level (Power OFF).
For Power ON this pin will be reduced to low.
SCL 2 I
2
C-bus clock line
SDA 3 I
2
C-bus data line
TUNING 4 NC
P3.0/NTSC SW 5
NC
KEY 6 Control keys input
VOL 7 Sound Volume control PWM output
MUTE 8 Sound mute output
VSSC/P 9 Digit ground for µ-controller core and periphery
BAND1 10
NC
BAND2 11
NC
VSSA 12 Analog ground of teletext decoder and digital ground of
TV-processor
SECPLL 13
PLL decoupling
VP2 14 2
nd
supply voltage TV-pro8V)