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Technical Note of LA76818 2001/02/08
LA76818 Application Note Ver.e1(2001.1.18)
Table of Contents
TABLE OF CONTENTS...........................................................................................................................................1
THE BUS CONTROL FUNCTIONS OF LA76818 (TENTATIVE ).............................................................................2
PIN 1 (A UDIO OUTPUT )........................................................................................................................................12
PIN 2 (FM OUTPUT )...............................................................................................................................................13
PIN 3 (IF AGC FILTER)........................................................................................................................................14
PIN 4 (RF AGC OUTPUT)..................................................................................................................................15
PIN 5,6 (PIF AMP INPUT)..................................................................................................................................17
PIN 7 (IF GROUND) ............................................................................................................................................17
PIN 8 (IF VCC ) .......................................................................................................................................................17
PIN 9 (FM FILTER) ..............................................................................................................................................18
PIN 10 (AFT OUTPUT).......................................................................................................................................19
PIN 11 (BUS DATA).............................................................................................................................................19
PIN 12 (BUS CLOCK).........................................................................................................................................20
PIN 13(ABL) ..........................................................................................................................................................20
PIN 14, 15, 16 (R, G, B INPUT).........................................................................................................................21
PIN 17(FAST BLANKING INPUT) ..................................................................................................................21
PIN 18(RGB VCC ).................................................................................................................................................22
PIN 19, PIN 20, PIN 21(R, G, B OUTPUT).....................................................................................................23
PIN 22(FSC OUTPUT OR C-SYNC. OUTPUT ).........................................................................................................24
PIN 23 (VERTICAL OUTPUT)..........................................................................................................................24
PIN 24 (V RAMP ALC FILTER)........................................................................................................................25
PIN 25 (HORIZONTAL / BUS VCC ).................................................................................................................26
PIN 26(AFC FILTER)...........................................................................................................................................26
PIN 27 (HORIZONTAL OUTPUT) ...................................................................................................................27
PIN 28 (FBP INPUT)............................................................................................................................................28
PIN29 (I REFERENCE )............................................................................................................................................29
PIN 31( CCD VCC)................................................................................................................................................30
PIN 32( CCD FILTER) .........................................................................................................................................31
PIN 33(CCD & DEFLECTION GDN) ..............................................................................................................31
PIN 36 (CHROMA APC2 FILTER)...................................................................................................................33
PIN 37(CLAMP FILTER) ....................................................................................................................................33
PIN 38(4.43MHZ CRYSTAL)..............................................................................................................................34
PIN 39(CHROME APC1 FILTER).....................................................................................................................34
PIN 40(SELECTED VIDEO OUTPUT)...........................................................................................................35
PIN 41(VIDEO CHROME DEFLECTION GND).....................................................................................................35
PIN 42(EXT VIDEO INPUT & Y INPUT IN S-VHS MODE)......................................................................35
PIN 43(VIDEO CHROME DEFLECTION VCC)...........................................................................................35
PIN 44(INT. VIDEO INPUT & CHROME SIGNAL INPUT IN S-VHS MODE)....................................36
PIN 45(BLACK STRETCH FILTER)................................................................................................................36
PIN 46 (VIDEO OUTPUT)..................................................................................................................................37
PIN 47 (VCO FILTER)...........................................................................................................................................37
PIN 48, 49 (VCO COIL).......................................................................................................................................38
PIN 50 (PIF APC FILTER) ..................................................................................................................................39
PIN 51 (EXT AUDIO INPUT)............................................................................................................................40
PIN 52 (SIF OUTPUT).........................................................................................................................................40
PIN 53 (SND APC FILTER)................................................................................................................................41
PIN 54 (SIF INPUT)..............................................................................................................................................41
STATUE REGISTER OF LA76818............................................................................................................................42
LA76818 PIN A SSIGNMENT .................................................................................................................................43
LA76818 BUS CONTROL RESISTOR BIT A LLOCATION M AP ...........................................................................44
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Technical Note of LA76818 2001/02/08
The BUS Control Functions of LA76818 (Tentative)
Register Name Bits General Description
T Disable 1 bits Disable the Test SW & enable Audio / Video Mute SW
This is a Test Mode Switch, which is used in IC production (in case of using IC tester
for measuring).
*If the bit of BUS is set as `0', it becomes Test Mode. Then the test functions below will
take active.