TA1310ANG Datasheet, PDF (48/106 Pages) Toshiba Semiconductor – NTSC VIDEO, CHROMA, DEFLECTION, AND DISTORTION COMPENSATION IC (WITH YUV INTERFACE AND ACB)

NOTE
ITEM
Color Difference Output
C₆ Tint Adjustment
Characteristics
Supply Voltage
C₇ Dependence of Color
Difference Output
SW MODE
SW₄₅ SW₄₆
1)
2)
B
ON
3)
1)
2)
(#16 V_CC = 9 V, #37 V_CC = 9 V, #51 V_CC = 5 V, Ta = 25 ± 3°C)
MEASUREMENT METHOD
Input a rainbow signal (signal C-1) to the chroma input pin (TP45).
Burst : chroma = 300 mV_p-p : 300 mV_p-p
Measure the demodulation angles θ_B’ and θ_R’ in the outputs with the tint set to the maximum
(subaddress (03H), data (FE)). Calculate θ_Bmax and θ_Rmax by the following formulas.
θ_Bmax = θ_B’ − θ_Bcnt
θ_Rmax = θ_R’ − θ_Rcnt
Measure the demodulation angles θ_B” and θ_R” in the outputs with the tint set to the minimum (subaddress
(03H), data (00). Calculate θ_Bmin and θ_Rmin by the following formulas
θ_Bmin = θ_B″ − θ_Bcnt
θ_Rmin = θ_R″ − θ_Rcnt
Input a rainbow signal (signal C-1) to the chroma input pin (TP45).
Burst : chroma = 300 mV_p-p : 300 mV_p-p
As in C₂, measure the amplitudes ∆VBp and ∆VRp of the B-Y output pin (TP47) and R-Y output pin
(TP48) when the 5-V V_CC is set to 5 V + 0.3 V. Calculate the amplitude ratios BVp and RVp when the 5-V
V_CC is set to 5 V.
B
ON
BVp = ^{∆VBp − vB} ×100
vB
RVp = ^{∆VRp − vR} ×100
vR
3) Using the same tests as above, calculate BVn and RVn when the 5-V VCC is set to 5 V − 0.3 V
BVn = ^{∆VBn − vB} ×100
vB
RVn = ^{∆VRn − vR} ×100
vR
C₈ Identification Sensitivity
C₉ Bus Read Identification
1) Input a rainbow signal (signal C-1) to the chroma input pin (TP45).Burst : chroma = 1 : 1
2) Gradually reduce the input signal amplitude from 100 mV_p-p. When the B-Y output pin (TP47) signal
B
ON
disappears (when the current is DC), measure the input signal amplitude v_CB.
3) Gradually increase the input signal amplitude from 0 mV_p-p. When a demodulation signal appears on the
B-Y output pin (TP47), measure the input signal amplitude v_BC.
1) Perform the same tests as above while observing the bus read : When the input signal amplitude is v_CB,
B
ON
check that the first bit is set to 0 (bCB).
When the input signal amplitude is v_BC, check that the first bit is set to 1 (bBC).
Note 1: Where the bus data are not specified, set the preset values.
Note 2: Ensure the sync signal is always input to TP38 (SYNC IN).
TA1310ANG
48
2005-09-20