W88111AF 데이터 시트보기 (PDF) - Winbond

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W88111AF

ATAPI CD-ROM Decoder & Controller

Winbond 

W88111AF/W88112F

ATAPI CD-ROM Decoder & Controller

This specification is subject to change without notice.

Bit 0: PCEN - P-codeword Correction Enable

Preliminary/Confidential

When this bit is high, P-codeword RSPC correction logic is enabled.

Bit 6,3: Reserved

DECEN

0Ah.7

1

1

1

1

1

0

BUFEN EDCEN

0Ah.2 0Ah.5

1

1

1

1

1

1

1

1

0

0

X

X

QCEN

0Ah.1

1

1

0

0

0

X

PCEN

0Ah.0

1

0

1

0

0

X

Decoder

Mode

Q-P correction

Q-correction

P-correction

Write-only

Disk-monitor

Decoder

disable

Operation

Flow

Q → P → CRC

Q → CRC

P → CRC

CRC

no buffering

no operation

CTRL1 - Control Register 1 - (write 0Bh)

Bit 7: SIEN - Sync Insertion Enable

When this bit is high, the sector boundary is determined by internal sync insertion logic.

Bit 6: SDEN - Sync Detection Enable

When this bit is high, the sector boundary is determined by incoming serial data.

Bit 5: DSCREN - Descrambler Enable

Setting this bit high enables the descrambling logic.

Bit 4: CWEN - Corrected Data Write Enable

Setting this bit high enables corrected data to be written to the external RAM.

Bit 3: M2RQ - Mode 2 ECC Request

Setting this bit high enables the mode 2 ECC correction logic. Mode 1 ECC correction will be

performed if this bit is low.

- 18 -

Publication Release Date: Aug, 1996

Preliminary/ Confidential Revision A0.1

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