TA1383AFG Datasheet, PDF (26/47 Pages) Toshiba Semiconductor – NTSC Chroma Decoder, Multi-Point Scan Sync Processor, H/V Frequency Counter IC for Color TV

TA1383AFG
Test Method (unless otherwise specified, V_CC1 = 9 V, V_CC2 = 5 V, Ta = 25°C ± 3°C, bus data: preset values)
Note No.
Y/back end block
Characteristic
Y1 I/O gain 2
(YPbPr → YCbCr)
SW Mode
SW28 SW29 SW30
Test Method
Y/back end block common test conditions
(1) Write data: Transmit PREST DATA. Read data: Read DATA.
(2) Set SA 08H/09H/10H to 00H/00H/00H.
(3) Set SW2 to A, SW4 to A, SW6 to B, SW9 to On, SW12 to A, SW16 to A, SW19 to A, SW22 to B, SW23 to B, and
SW24 to B.
C
C
A (1) Set INPUT SW (SA 00H) to D-SYNC1/Y3/CbCr (PbPr) (C0H).
↓
↓
(2) Set MATRIX SW (SA 03H) to MODE-2 (A0H).
A
A
↓
(3) Input sine wave A (f = 100 kHz) to IN30 and set #30 amplitude to 0.2 V_p-p.
(4) Measure #24 amplitude VMYC [V] and determine GMYC using the following equation.
C
GMYC = 20 × log (VMYC/0.2) [dB]
(5) Set SW29 to A, input sine wave B (f = 100 kHz) to IN29, and set #29 amplitude to 0.2 V_p-p.
(6) Input sync signal to IN30.
(7) Measure #24, #23, #22 amplitudes VMBC1, VMBC2, and VMBC3 [V], and determine GMBC1, GMBC2, and GMBC3
using the following equation.
GMBC* = 20 × log (VMBC*/0.2) [dB]
(8) Set SW28 to A and SW29 to C, input sine wave B (f = 100 kHz), and set #28 amplitude to 0.2 V_p-p.
(9) Input sync signal to IN30.
(10) Measure #24, #23, #22 amplitudes VMRC1, VMRC2, and VMRC3 [V], and determine GMRC1, GMRC2, and GMRC3
using the following equation.
GMRC* = 20 × log (VMRC*/0.2) [dB]
26
2005-09-05