TMS3471C

2/3-INCH NTSC TIMER

SOCS028B – AUGUST 1991

8

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

1 Line = 63.55

µs

(525)

PS,T

ABIN

GT

PI

SH2,3

GT3

S1

SC,SC(90)

BCP2

BCP1

BF

CBLK

CSYNC

CP2

CP1

FI

VD

523

521

279

262

524

9

0

0

Continuous

VS 3H

EQ 3H

EQ 3H

VS 3H

EQ 3H

20

0

272

9

524

Even Field

Odd Field, 262.5 H

0

268.5

262.5

6

0

288

280

275

270

265

30

25

20

15

10

5

0

17

S2,3

0

GT2

9

0

GT1

9

0

SH1

6H

6H

20H

10H

20H

10H

244 Pulses‡

244 Pulses‡

244

Pulses‡

244

Pulses‡

Vertical

Scale†

10H

10H

4.77273 MHz

260

256

EQ 3H

262

† 525 intervals equal 33.3 ms equals 1 TV frame

‡ The frequency of these pulses is either 2.04545 MHz or 1.02273 MHz and is determined by the logic level on the VDS input.

Figure 2. Vertical Timing