SH7261 datasheet(992/1348 Pages) RENESAS

992 / 1348 page

Section 21 CD-ROM Decoder (ROM-DEC)

Rev. 2.00 Sep. 07, 2007 Page 960 of 1312

REJ09B0320-0200

21.3.8

Sync Code Status Register (CROMST0)

CROMST0 indicates various status information in sync code maintenance modes.

76543210

Bit:

Initial value:

R/W:

00000000

RRRRRRRR

——

ST_

SYIL

ST_

SYNO

ST_

BLKS

ST_

BLKL

ST_

SECS

ST_

SECL

Bit

Bit Name

Initial

Value

R/W

Description

7, 6



All 0

Reserved

These bits are always read as 0 and cannot be

modified.

ST_SYIL

Indicates that a sync code was detected at a position

where the value in the word counter (used to measure

intervals between sync codes) was not correct, but the

sync code was ignored and not taken into account in

synchronization.

This bit is only valid in automatic sync maintenance

mode and interpolated sync mode.

ST_SYNO

Indicates that a sync code has not been detected

despite the word counter having reached the final value,

and synchronization has been continued with the aid of

an interpolated sync code.

This bit is only valid in automatic sync maintenance

mode and interpolated sync mode.

ST_BLKS

Indicates that a sync code was detected at a position

where the value in the word counter was not correct,

and the sync code was used in synchronization.

This bit is only valid in automatic sync maintenance

mode and external sync mode.

ST_BLKL

Indicates that a sync code has not been detected

despite the word counter having reached the final value,

and the period of the sector has been prolonged.

This bit is only valid in external sync mode.

SH7261 Datasheet(PDF) 992 Page - Renesas Technology Corp

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