STV5438(2004) 데이터 시트보기 (PDF) - STMicroelectronics

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STV5438
(Rev.:2004)

MONOCHIP TELETEXT AND VPS DECODER WITH 8 INTEGRATED PAGES

STMicroelectronics 

STV5348

Table 12. Registers Functions

Register

Function

Bit(s)

Description

SEL 11B (D0)

Selection of register 11B (D0 = 1) or 11A (D0 = 0)

EVEN OFF (D2)

Control of ODD/EVEN pin: EVEN signal output

(D2 = 0) or grounded (D2 = 1)

R0

Address

00H

R11 addressing and

pin functions control

DISABLE ROLLING

HEADER

FREE RUNNING

PLL (D6)

D4 = 1, Disable rolling header

D4 = 0, Normal operation

D6 = 0, PLL locks on line frequency

D6 = 1, to force free running mode

X/24 POSITION (D7) D7 = 0, packet X/24 stored to chapter 4 to 7/row 20

D7 = 1, packet X/24 stored to chapter 0 to 3/row 24

T1 (D1) T0 (D0) Character display line control:

0

0

312.5/312.5 line MIX - mode with interlace

0

1

312/313 line TEXT - mode without interlace

1

0

312/312 line Terminal mode without interlace

duct(s) R1

ro Address

01H

duct(s) - Obsolete P R2

ro Address

02H

lete P R3

so Address

b 03H

O R4

Operating mode

controls

Addressing

information for

a page request

Data relative to the

requested page

(see Table 10)

Selection of one of

1

1

External synchronization. SCS mode (scan field

synchro)

TCS ON (D2)

Master Mode (MA/SL Pin 2 = 0)

case POL Pin 4 = 0

D2 = 0, Pin 5 = VCS

D2 = 1, Pin 5 = TCS

Slave Mode (MA/SL Pin 2 = VDD)

No effect

DEW / FULLFIELD Selection of field flyback mode or full channel mode

(D3)

(D3 = 1) for recovering of Teletext data.

GHOST ROW

ENABLE (D4)

Selection of ghost row mode (D4 = 1)

ACQUISITION

ON / OFF (D5)

Control of acquisition operation (D5 = 0 enables

acquisition)

7 bits + parity or 8 bits Selection of received data format either 7 bits with

without parity (D6) parity (D6 = 0) or 8 bits without parity (D6 = 1).

SC0, SC1, SC2

(D0, D1, D2)

Address the first column of the on chip page request

RAM to be written.

TB (D3)

Test bit equal to "0" in the normal working mode.

A0, A1 (D4, D5)

Address a group of four consecutive pages currently

used for data acquisition.

A2 (D6)

Address of one of the two groups of four pages for

acquisition in normal mode.

PRD0 - PRD4

(D0 - D4)

Written data in the page request RAM, starting with

the columns addressed by SC0, SC1, SC2.

A0, A1, A2

Chapter selection.

Address

eight pages to

(D0, D1, D2)

04H

display

13/30

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