ST92195D datasheet(158/249 Pages) STMICROELECTRONICS

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ST92195C/D - TELETEXT SLICER AND ACQUISITION UNIT

TELETEXT SLICER AND ACQUISITION UNIT (Cont’d)

7.7.7 Register Description

ACQUISITION PAGE OPEN REGISTER

(ACQPOR)

R248 - Read/Write

Reset value: 0000 0000 (00h)

Bits 7:0 = POR[7:0] The data packets associated

with each bit will be stored or not depending also

on the value if the corresponding MLR bit in the

ACQMLR register. Refer to the ACQMLR register

description.

ACQUISITION MAGAZINE LOCKED REGISTER

(ACQMLR)

R249 - Read/Write

Reset value: 0000 0000 (00h)

Bits 7:0 = MLR[7:0] The associated Data Packets

of the corresponding magazine will be stored as

described in the following table:

ACQUISITION NEW HEADER RECEIVED REG-

ISTER (ACQNHRR)

R250 - Read/Write

Reset value: 0000 0000 (00h)

Each bit in the ACQNHR register corresponds to a

magazine. It is set by hardware if a new header of

the corresponding magazine is received and must

be reset by software after each VBI.

Bits 7:0 = NHR[7:0]

New Header Received.

0: No new header received.

1: A new header was received and the storage of

the 41 bytes flow depends on the ACQPOR /

ACQMLR values shown in the following table.

POR7

POR6

POR5

POR4

POR3

POR2

POR1

POR0

MLR7

MLR6

MLR5

MLR4

MLR3

MLR2

MLR1

MLR0

MLRi PORi

Meaning

Magazine locked. No storage even if a

header is received

Page closed, wait for new header

Page opened. Storage

NHR7

NHR6

NHR5

NHR4

NHR3

NHR2

NHR1

NHR0

MLRi PORi NHRi

Results

Magazine locked; no storage

done

No storage for that magazine dur-

ing the VBI

Storage started on new header

received

Current page not yet closed; data

received or not

Current page closed; new page

started

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