TB1254N 查看數據表（PDF） - Toshiba

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TB1254N

PAL / NTSC / SECAM 1CHIP (IF+VCD PROCESSOR) IC

Toshiba 



 

READ MODE

item

bits

POR

1

IF Lock Det

1

H Lock Det

1

IF level

1

V Freq

1

Color System

3

Y-in

1

RGB OUT

1

H OUT

1

V OUT

1

PIF VCO Adj.

V Lock

1

AFT

2

Sync Det

1

C-in DC

1

Product code

3

AKB Overflow

1

CRT Warm up

1

AKB Finish

1

STD/Non -Std

1

P-ID

1

N-ID

1

S ID

1

Noise det

1

PIF VCO error detect 1

Coil error

1

Description

Power on reset

0: normal

1: Resister Preset

IF lock detection

0: Lock out

1: Lock in

Horizontal lock detection

0: Lock out

1: Lock in

IF AGC gain detection

0: High IF AGC gain

1: Low IF AGC gain

Monitoring the IF AGC level to detect if the IF input level is weak or

not.

( The threshold level is around 50 ~ 60 dB

Vertical Frequency

0: 50 Hz

1: 60 Hz

Present color system status

000: B / W

001: 4.43 PAL

010: M-PAL

011: N-PAL

100: 358 NTSC

101: 443 NTSC

110: SECAM

111: N/A

Y in for self diagnostic

0: no signal

1: detected

RGB OUT for self diagnostic

0: no signal

1: detected

H OUT for self diagnostic

0: detected

1: no signal

V OUT for self diagnostic

0: detected

1: no signal

Turn to 1 while the PIFVCO

0: normal

1: PIF VCO adjusting

V Lock for self diagnostic

0: Lock out

1: detected

AFT status

00: Lock OUT

01: too high

10: too low

11: Good

Detecting if the H sync. pulses are or are not.

0: no signal

1: detected

The DC voltage on C input terminal. It is for detecting the S-jack

swith.

0: open

1: Low

000: TB1258

001: TB1251

010: TB1252

011: TB1253

100: TB1254

101: TB1255

110: TB1256

111: TB1257

0: normal

1: overflowed

0: normal

1: not warm up

0: active

1: finished

0: non-standard V freq.

1: Standard V freq.

0: detected

1: not identified

0: detected

1: not identified

0: detected

1: not identified

1: normal

0: Large noise level

0: normal

1:error detect

0: OK

1:NG

preset

Ver3.7

00/01/28 19

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