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PDF LA76818 Data sheet ( Hoja de datos )

Número de pieza LA76818
Descripción Application NOTE
Fabricantes Sanyo 
Logotipo Sanyo Logotipo



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Technical Note of LA76818
2002/01/23
LA76818 Application Note
Ver.e1(2002.1.22)
Table of Contents
TABLE OF CONTENTS...........................................................................................................................................1
www.DataSheet4U.com
THE BUS CONTROL FUNCTIONS OF LA76818 (TENTATIVE).............................................................................2
STATUE REGISTER OF LA76818............................................................................................................................15
PIN 2 (FM OUTPUT )...............................................................................................................................................16
PIN 3 (IF AGC FILTER)........................................................................................................................................17
PIN 4 (RF AGC OUTPUT)..................................................................................................................................18
PIN 5,6 (PIF AMP INPUT)..................................................................................................................................19
PIN 7 (IF GROUND) ............................................................................................................................................20
PIN 8 (IF VCC) .......................................................................................................................................................20
PIN 9 (FM FILTER)..............................................................................................................................................20
PIN 10 (AFT OUTPUT).......................................................................................................................................21
PIN 11 (BUS DATA).............................................................................................................................................21
PIN 12 (BUS CLOCK).........................................................................................................................................22
PIN 13(ABL) ..........................................................................................................................................................22
PIN 14, 15, 16 (R, G, B INPUT).........................................................................................................................23
PIN 17(FAST BLANKING INPUT) ..................................................................................................................23
PIN 18(RGB VCC).................................................................................................................................................24
PIN 19, PIN 20, PIN 21(R, G, B OUTPUT) .....................................................................................................25
PIN 22(FSC OUTPUT OR C-SYNC. OUTPUT ).........................................................................................................26
PIN 23 (VERTICAL OUTPUT)..........................................................................................................................26
PIN 24 (V RAMP ALC FILTER)........................................................................................................................27
PIN 25 (HORIZONTAL / BUS VCC).................................................................................................................28
PIN 26(AFC FILTER)...........................................................................................................................................28
PIN 27 (HORIZONTAL OUTPUT) ...................................................................................................................29
PIN 28 (FBP INPUT)............................................................................................................................................30
PIN29 (I REFERENCE )............................................................................................................................................31
PIN 30 (4MHZ CLOCK OUTPUT)....................................................................................................................32
PIN 31( CCD VCC) ................................................................................................................................................32
PIN 32( CCD FILTER) .........................................................................................................................................33
PIN 33(CCD & DEFLECTION GDN) ..............................................................................................................33
PIN 34,35 (SECAM INPUT OR CBCR INPUT)................................................................................................33
PIN 36 (CHROMA APC2 FILTER)...................................................................................................................34
PIN 37(CLAMP FILTER) ....................................................................................................................................34
PIN 38(4.43MHZ CRYSTAL)..............................................................................................................................34
PIN 39(CHROME APC1 FILTER).....................................................................................................................35
PIN 40(SELECTED VIDEO OUTPUT)...........................................................................................................35
PIN 41(VIDEO CHROME DEFLECTION GND).....................................................................................................35
PIN 42(EXT VIDEO INPUT & Y INPUT IN S-VHS MODE)......................................................................36
PIN 43(VIDEO CHROME DEFLECTION VCC)...........................................................................................36
PIN 44(INT. VIDEO INPUT & CHROME SIGNAL INPUT IN S-VHS MODE)....................................36
PIN 45(BLACK STRETCH FILTER)................................................................................................................37
PIN 46 (VIDEO OUTPUT)..................................................................................................................................37
PIN 47 (VCO FILTER)...........................................................................................................................................38
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
LA76818 PIN ASSIGNMENT .................................................................................................................................42
LA76818 BUS CONTROL RESISTOR BIT ALLOCATION MAP ...........................................................................43
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1 page




LA76818 pdf
Technical Note of LA76818
2002/01/23
Red Bias
8 Align Red OUT DC level
Green Bias
8 Align Green OUT DC level
Blue Bias
8 Align Blue OUT DC level
Adjust the DC (cutoff) level of RGB.
Red Drive
7
Green Drive
4
Blue Drive
7
www.DataSheet4U.comAdjust the output gain of RGB.
Align Red OUT AC level
Align Green OUT AC level
Align Blue OUT AC level
RGB Test4
RGB control test mode
1:Test mode.
0:Nomal mode
1 Enable RGB test mode
Drive Test mode
Drive control test mode
1:Test mode.
0:Nomal mode
1 Enable Drive test mode
Half Tone
Adjust the half tone level
2 Adjust half tone level
Half Tone Defeat
1
0 = Half tone ON
1 = Half tone OFF
Half tone ON/OFF SW
A2.SW
1 West germany stereo mode
West germany stereo mode select
1:W-G stereo mode.(need SIF system set=1)
0:Nomal mode
Blank Defeat
1 Disable RGB output blanking
Switch ON/OFF the H/V blanking of RGB output.
0 = blanking ON (Normally mode)
1 = blanking off
A.MONI.SW
1 Select 2pin output SAO at External audio input.
Select 2pin output.
0:Normal mode (de-empasis FM-Detector).
1:SAO mode at External audio input mode.
S.TRAP.SW
1
Select sound trap ON/OFF.
0:Nomal mode.(Sound trap ON)
Select sound trap ON/OFF.
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5 Page





LA76818 arduino
Technical Note of LA76818
2002/01/23
Bright ABL Threshold 3 Align brightness ABL threshold
Bright Mid Stop Defeat 1 Disable brightness mid stop
In order to make the design of TV chassis more easier, ABL(Auto Beam
Limiter)function can be controlled by BUS.
Bright ABL Defeat The defeat SW of Brightness ABL
1 = ABL Defeat ON
0 = ABL Defeat OFF
Bright ABL Threshold: Adjust the start operating point of Brightness ABL
www.DataSheet4U.comBright Mid Stop Defeat: The defeat switch for the limit operation of brightness ABL by
brightness control
1 = Disable limit operation
0 = Enable limit operation
RGB Temp. SW
0 = -1VBE.
1 = Flat
1 Select the temperature characteristics for RGB DC output.
R/B Gain Balance
4 R-Y/B-Y Gain Balance
Adjust the demodulation ratio of R-Y and B-Y.
R/B Angle
4 R-Y/B-Y Angle
Adjust the demodulation angle of R-Y and B-Y.
B-Y DC Level
4 B-Y DC Level ( White-Balance )
R-Y DC Level
4 R-Y DC Level ( White-Balance )
*Fine adjust the offset of the DC level (white balance) when switch PAL/SECAM
system. SECAM decoder is using external IC.
Audio SW
1
The switch of Int./Ext. audio input.
0 = Internal
1 = External
Volume
7 Customer volume control
Sound volume control (attenuation mode)
Maximum gain = 0dB, step = 0.5dB
OVER.MOD.SW
Drive control test mode
1:Test mode.
0:Nomal mode
1 Select over moduration function
VOL.FIL
1 Disable volume DAC filter
In order to get rid of the “POP” noise which is caused by the DAC of volume control,
volume filter is built-in into the IC.
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