TA1310ANG Datasheet, PDF (52/106 Pages) Toshiba Semiconductor – NTSC VIDEO, CHROMA, DEFLECTION, AND DISTORTION COMPENSATION IC (WITH YUV INTERFACE AND ACB)

TA1310ANG
Color difference stage
NOTE
ITEM
A₁
Color Difference Input
Clamp Voltage
A₂
Color Difference Input /
Output Delay Time
A₃
Unicolor Adjustment
Characteristics
SW₆
C
C
C
SW MODE
SW₄₅ SW₅₂ SW₅₃
1)
A
A
A
2)
1)
2)
A
B
B
3)
4)
5)
1)
2)
3)
A
B
B 4)
5)
(#16 V_CC = 9 V, #37 V_CC = 9 V, #51 V_CC = 5 V, Ta = 25 ± 3°C)
MEASUREMENT METHOD
Connect the color difference input pin to AC-GND. (Set SW_52A and SW_53A to A.)
Measure the voltage V_RY of the R-Y input pin (#52) and the voltage V_BY of the B-Y input pin (#53).
Set to external color difference input mode (subaddress (05H), data (81)).
Now set as follows :
Unicolor : maximum (subaddress (00H), data (3F))
Brightness : maximum (subaddress (01H), data (7F))
Color
: center (subaddress (02H), data (40)).
Set SW_52A and SW_53A to B. Input signal C-2 to the R-Y input pin (TP52) and the B-Y input pin (TP53)
f₀ = 100 kHz, picture period amplitude = 0.2 V_p-p.
Measure the signal delay time (DLRY) from the R-Y input pin (TP52) to the R output (TP13).
Measure the signal delay time (DLBY) from the B-Y input pin (TP53) to the B output (TP15).
Set to external color difference input mode (subaddress (05H), data (81))
Now set as follows :
Brightness
:
Color
:
Relative phase amplitude :
maximum (subaddress (01H), data (7F))
center (subaddress (02H), data (40))
standard (subaddress (12H), data (00)).
Set SW_52A and SW_53A to B. Input signal C-2 to the R-Y input pin (TP52) and the B-Y input pin (TP53).
f₀ = 100 kHz, picture period amplitude = 0.2 V_p-p.
Set unicolor to the maximum (subaddress (00H), data (3F)). Measure the RUmax, the amplitude of the R output (TP13),
and BUmax, the amplitude of B output (TP15).
Set unicolor to the minimum (subaddress (00H), data (00)). Measure the RUmin, the amplitude of the R output (TP13),
and BUmin, the amplitude of B output (TP15).
6) Calculate the unicolor adjustment characteristics uR and uB by the following formulas.
uR = 20Log ^RUmin
RUmax
uB = 20Log ^BUmin
BUmax
Note 1: Where the bus data are not specified, set the preset value.
Note 2: Ensure the sync signal is always input to TP38 (SYNC IN).
52
2005-09-20