TA1316AN Datasheet, PDF (79/115 Pages) Toshiba Semiconductor – YCbCr/YPbPr Signal and Sync Processor for Digital TV, Progressive Scan TV and Double Scan TV

Note No.
Parameter
S02 Color difference signal amplitude
correction
TA1316AN
Test Conditions
SW mode
Test Method (test conditions: V_CC = 9 V/2 V, Ta = 25° ± 3°C)
SW3 SW4 SW5 SW7
C
SW8
B
A
SW9
B
A OPEN (1) Input 100-kHz sine wave to TP4 and set pin 4 amplitude to 0.2 VP-P.
SW10
B
SW56 ^{(2) Set Y mute to OFF (P-MODE: Normal1 (000)), YUV INPUT MODE to Through (10), BRIGHTNESS to center}
(10000000), COLOR to center (1000000), UNI-COLOR to maximum (1111111), Y/C GAIN COMP1 to
OPEN
minimum (00), Y/C GAIN COMP2 to minimum (00), black stretch point 1 to off (000), dynamic Y γ point to 30
IRE (11) and SW1 to A. Apply 0 V to TP1 using external power supply PS1 and 5.16 V to pin 3 using PS2.
(3) Monitor pin 41 output waveform and measure amplitude VBDY0.
(4) Set Y/C GAIN COMP1 to maximum (11) and measure pin 41 amplitude VBDY1.
(5) Set DYNCγ GAIN VS DARK AREA to maximum (111), STATICγ-GAIN to maximum (11) and external power
supply PS1 to 1 V, and measure pin 41 amplitude VBDY2.
(6) Set Y/C GAIN COMP2 to maximum (11) and measure pin 41 amplitude VBDY3.
(7) Set Y/C GAIN COMP1 to minimum (00), Y/C GAIN COMP2 to minimum (00), DYNCγ GAIN VS DARK AREA
to minimum (000), STATICγ-GAIN to minimum (00), PS1 to 0 V, PS2 to 5 V and SW2 to A. Measure pin 41
amplitude VBBS0.
(8) Set Y/C GAIN COMP1 to maximum (11) and measure pin 41 amplitude VBBS1.
(9) Set black stretch point 1 to maximum (111) and measure pin 41 amplitude VBBS2.
(10) Set Y/C GAIN COMP2 to maximum (11) and measure pin 41 amplitude VBBS3.
(11) Calculate using the following formulae.
GC_BDY1 = 20 × "og (VBDY1/VBDY0) GC_BDY2 = 20 × "og (VBDY2/VBDY0)
GC_BDY3 = 20 × "og (VBDY3/VBDY0) GC_BBS1 = 20 × "og (VBBS1/VBBS0)
GC_BBS2 = 20 × "og (VBBS2/VBBS0) GC_BBS3 = 20 × "og (VBBS3/VBBS0)
(12) Input 100-kHz sine wave to TP5, set pin 5 amplitude to 0.2 V_P-P, repeat steps (2) to (11) above and
determine GC_RDY1, GC_RDY2, GC_RDY3, GC_RSB1, GC_RSB2 and GC_RSB3.
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2002-10-04