SH7261 datasheet(998/1348 Pages) RENESAS

998 / 1348 page

Section 21 CD-ROM Decoder (ROM-DEC)

Rev. 2.00 Sep. 07, 2007 Page 966 of 1312

REJ09B0320-0200

Bit

Bit Name

Initial

Value

R/W

Description

ST_ECCQ

Indicates that Q-parity errors were not corrected in ECC

correction.

This bit is only valid when synchronization is normal

(the sector is neither short nor long).

This bit is set to 1 when the result of syndrome

calculation for Q parity is non-0.

ST_EDC1

Indicates that the result of the EDC check before ECC

correction was 'fail'.

This bit is also set to 1 if a short sector is encountered

while EDC is enabled.

ST_EDC2

Indicates that the result of the EDC check after ECC

correction was 'fail'.

21.3.14

Buffer Status Register (CBUFST0)

CBUFST0 indicates that the system is searching for the first sector to be buffered, or that

buffering is in progress.

76543210

Bit:

Initial value:

R/W:

00000000

RRRRRRRR

BUF_

REF

BUF_

ACT

————

—

Bit

Bit Name

Initial

Value

R/W

Description

BUF_REF

Indicates that the search for the first sector to be

buffered is in progress.

This bit is only valid when the automatic buffering

function is used (CBUF_AUT = 1).

BUF_ACT

Indicates that buffering is in progress.

5 to 0



All 0

Reserved

These bits are always read as 0 and cannot be

modified.

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