TC90A80N/F

2002-12-04

9

Description of I

(1) Function

: Controls input signal and IC functions. (YCS: Y/C-IN → 3 line Y/C separation, NR: Y

and C input independently → YNR, CNR)

(2) Skew

: Controls skew correction. (OFF: normal mode, ON: Corrects skew every 0.2 H.)

(3) C-Delay

: Controls Y/C time. (Switches chroma signal delay time. −: Advances chroma signal.

+: Delays chroma signal.)

(4) D-Range

: Controls input/output gain. (2 Vp-p: 1 V input 2 V output, Gain = 6dB, 1 Vp-p: 1 V

input 1 V output, Gain = 0dB)

(5) Input Clock

: Controls clock PLL. (Select input clock.)

(6) CNR Gain

: Controls CNR cyclic coefficient/subtraction gain. (OFF: Stops CNR. 0.75: Maximum

effect)

(7) CNR Lim.

: Controls the CNR limiter. (Limiter level when converting 100 IRE input.: 4 ≈ −31dB

to 18 ≈ −18dB)

(8) CNR Corr.

: Controls CNR correlation/non-correlation

ON: Controls CNR correlation/non-correlation. → Low vertical color misalignment

OFF: Maximum → effect with vertical color misalignment

(9) Mode1

: Corrects Y frequency characteristic and controls Y-NC bottom frequency. (high: 4/3

(11) Y-EQ Gain

: Controls Y frequency characteristic correction addition gain. (OFF: Stops frequency

characteristic correction. 0.5: Corrects by +3dB at 3 MHz.)

(12) Y-EQ/N.C Lim

: Controls Y frequency characteristic correction coring level and Y-NC limiter. (OFF:

low, When converting 100 IRE input, limiter levels are as follows.2: −37dB, 4: −31dB,

8: −25dB, 14: −20dB)

(13) YNR Corr.

: Controls YNR correlation/non-correlation

ON: Controls YNR correlation/non-correlation → Low Y vertical color misalignment

OFF: Maximum effect → with Y vertical color misalignment

(14) Pulse Middle/High : Controls High pulse input polarity. (PV: PV with M/H and Killer with Middle/Low,

Killer: Killer with M/H and PV with M/L)

PV: Used for vertical-masking PLL for detecting skew and driving out HD + PV

when compensating skew.

Killer: Used for controlling separation Off, V-Emph Off in YCS Mode, and YNR/CNR

Off in NR Mode.

(15) Sync Out

: Controls pulse output in Skew Correction Mode. (HD: Drives out HD which is

synchronous with output signal. HD + PV: Mixes PV in HD which is synchronous

with to output signal.) HD lock phase is not held (varies from 500 ns to 600 ns).

In modes other than Skew Correction, drives out input C.SYN after delaying approx.

560 ns.

(16) Y/C Mix

: Controls Y/C mix output. (OFF: Drives out separated Y and C. ON: Drives out mixed

Y and C from the Y output pin. The C output pin is mute.)

(17) V-Emph Gain (YCS): Controls vertical enhancer gain. (OFF: Enhancer Off. +1.5: Maximum effect)

(18) V-Emph N.L (YCS) : Controls vertical enhancer non-linear point. (4: Low effect, 32: Maximum effect)

(19) V-Emph Core (YCS) : Controls vertical enhancer coring. (OFF: Coring Off. 3: Emphasizes non correlation

of approx. 15 mV or more.)

(20) YNR Gain (NR)

: Controls YNR cyclic coefficient/subtraction gain. (OFF: Stops YNR. 0.875: Maximum

effect)

(21) YNR Lim (NR)

: Controls the YNR limiter. (Limiter level when converting 100 IRE input.: 1 ≈

−43dB~15 ≈ −19dB)

(22) YNR Mode (NR)

: Controls YNR and Y-COMB bandwidths. (*-W: Wideband, *-N: Narrowband)

(Note that the controls of DATA4 D7 to DATA4 D0 vary according to the setting of DATA1 D7 (function).)