ADV7182ABCPZ datasheet(51/102 Pages) AD

51 / 102 page

Data Sheet

ADV7182A

Rev. 0 | Page 51 of 102

The VBI data standard that the VDP decodes on a particular line of

incoming video is set by default as described in Table 76. This

setting can be overridden manually and any VBI data can be

decoded on any line. The details of manual programming are

described in Table 77.

VDP Default Configuration

The VDP can decode different VBI data standards on a line to

line basis. The various standards supported by default on different

lines of VBI are explained in Table 76.

VDP Manual Configuration

MAN_LINE_PGM, Enable Manual Line Programming of

VBI Standards—Address 0x64, Bit 7, Interrupt/VDP Map

The user can configure the VDP to decode different standards

on a line to line basis through manual line programming. For this,

set the MAN_LINE_PGM bit. The user must write into all the

line programming registers, VBI_DATA_Px_Ny and VBI_DATA_

Px (see Register 0x64 to Register 0x77 in Table 98).

When MAN_LINE_PGM is set to 0 (default), the VDP decodes

default standards on lines, as shown in Table 76.

When MAN_LINE_PGM is set to 1, the VBI standards to be

decoded are manually programmed.

VBI_DATA_Px_Ny[3:0], VBI_DATA_Px[3:0], VBI Standard

to be Decoded on Line x for PAL, Line Y for NTSC—

Address 0x64 to Address 0x77, Interrupt/VDP Map

These are related 4-bit clusters in Register 0x64 to Register 0x77

of the interrupt/VDP map details (see Table 95). These 4-bit, line

programming registers, VBI_DATA_Px_Ny and VBI_DATA_Px,

identify the VBI data standard that is decoded on Line x in PAL

mode or on Line Y in NTSC mode. The different types of VBI

standards decoded by VBI_DATA_Px_Ny and VBI_DATA_Px

are shown in Table 77. Note that the X or Y value depends on

whether the ADV7182A is in PAL or NTSC mode.

Table 76. Default Standards on Lines for PAL and NTSC

PAL—625/50

NTSC—525/60

Line No.

Default VBI

Data Decoded

Line No.

Default VBI

Data Decoded

Line No.

Default VBI

Data Decoded

Line No.

Default VBI

Data Decoded

WST

318

Reserved

286

Reserved

WST

319

WST

Reserved

287

Reserved

WST

320

WST

Reserved

288

Reserved

WST

321

WST

NABTS

272

NABTS

WST

322

WST

NABTS

273

NABTS

WST

323

WST

NABTS

274

NABTS

WST

324

WST

NABTS

275

NABTS

WST

325

WST

Reserved

276

NABTS

WST

326

WST

NABTS

277

Reserved

WST

327

WST

Reserved

278

NABTS

Reserved

328

WST

NABTS

279

Reserved

329

Reserved

NABTS

280

NABTS

Reserved

332

Reserved

NABTS

281

NABTS

Reserved

333

WST

CGMS

282

NABTS

WST

334

WST

CCAP

283

CGMS

WST

335

CCAP

22 + full

odd field

NABTS

284

CCAP

336

WST

Reserved

285 + full

even field

NABTS

WSS

337 + full

even field

WST

Reserved

24 + full

odd field

WST

Reserved

Table 77. VBI Data Standards for Manual Configuration

VBI_DATA_Px_Ny

PAL—625/50

NTSC—525/60

0000

Disable VDP

0001

Teletext system identified by VDP_TTXT_TYPE

0010

Reserved

0011

Reserved

0100

WSS ITU-R BT.1119-1/ETSI.EN.300294

CGMS EIA-J CPR-1204/IEC 61880

0101

Reserved

0110

Reserved

0111

CCAP

CCAP EIA-608

1000 to 1111

Reserved

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