TA1316AN Datasheet, PDF (63/115 Pages) Toshiba Semiconductor – YCbCr/YPbPr Signal and Sync Processor for Digital TV, Progressive Scan TV and Double Scan TV

Note No.
Parameter
P12 DC restoration start point
TA1316AN
Test Conditions
SW mode
SW1 SW2 SW3 SW56
Test Method (test conditions: V_CC = 9 V/2 V, Ta = 25° ± 3°C)
B
B
C
ON (1) Set picture mute to off (P-MODE: Normal1 (000)), DC restoration start point to minimum (000) and DC REST
LIMIT to 100% (11), and connect external power supply PS1 to pin 3.
(2) Measure DC level of pin 43 picture period. Use PS1 at V₃ as reference. When PS1 is set to V₃ + 0.7 V, adjust
DC level to +1.0 V using UNI-COLOR.
(3) Set DC REST RATE to minimum (000), increase PS1 from V₃ and plot voltage relationship between pin 56
(DC voltage) and pin 43 (picture period voltage).
(4) Set DC REST RATE to maximum (111), increase PS1 from V₃ and plot voltage relationship between pins 56
and 43.
(5) Set DC REST RATE to maximum (111), DC restoration start point to maximum (111), increase PS1 from V₃
and plot voltage relationship between pins 56 and 43.
(6) Calculate V_DT0 and V_DT1 using the following formulae.
V_DT0 = [(V_SP0 − V₅₆)/1 V] × 100%
V_DT1 = [(V_SP1 − V₅₆)/1 V] × 100%
Pin 43
DC restoration start point: 000
DC restoration start point: 111
V_SP0
V_PC
DC restoration rate: 000
V_SP1
Pin 56
63
2002-10-04