SH7261 datasheet(1000/1348 Pages) RENESAS

1000 / 1348 page

Section 21 CD-ROM Decoder (ROM-DEC)

Rev. 2.00 Sep. 07, 2007 Page 968 of 1312

REJ09B0320-0200

21.3.16

Buffer Overflow Status Register (CBUFST2)

CBUFST2 indicates that a sector-to-sector transition occurred before data transfer to the buffer is

completed.

76543210

Bit:

Initial value:

R/W:

00000000

RRRRRRRR

BUF_

—————

—

Bit

Bit Name

Initial

Value

R/W

Description

BUF_NG

Indicates that a sector-to-sector transition has occurred

before the data transfer to the buffer is completed. This

bit is set to 1 when the data of a third sector are input

while data for the output stream from the CD-ROM

decoder remains unread. No interrupt is generated.

Once this bit has been set, its value will not recover

unless it is reset by the LOGICRST bit in the

ROMDECRST register.

6 to 0



All 0

Reserved

These bits are always read as 0 and cannot be

modified.

21.3.17

Pre-ECC Correction Header: Minutes Data Register (HEAD00)

HEAD00 indicates the minutes value in the header before ECC correction.

76543210

Bit:

Initial value:

R/W:

00000000

RRRRRRRR

HEAD00[7:0]

Bit

Bit Name

Initial

Value

R/W

Description

7 to 0

HEAD00[7:0]

All 0

Minutes value in the header before ECC correction

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