S5L9274 Ver la hoja de datos (PDF) - Samsung

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S5L9274

DECODER FOR CD-MP3/CD-ROM

Samsung 

S5L9274

DECODER FOR CD-MP3/CD-ROM

HOST MCU CONTROL SPACE

Registers to control CD-ROM sector decoding

// Read only registers (8'h20  8'h2F reserved for cdrUnit - Read)

H_MIN_R 8'h24 "minute" in the header of the sector being currently decoded.

H_SEC_R 8'h25 "second" in the header of the sector being currently decoded.

H_FRM_R 8'h26 "frame" in the header of the sector being currently decoded.

H_MODB_R 8'h27 CD-ROM Mode information in the header of the sector being currently

decoded.

H_FN_R

8'h28 The file number information in the sub header of the current frame.

This is valid for Mode-2 format.

H_CN_R

8'h29 The channel number information in the sub header of the current frame.

This is valid for Mode-2 format.

H_SM_R 8'h2a The sub-mode information in the sub header of the current frame.

This is valid for Mode-2 format.

H_CI_R

8'h2b The coding information in the sub header of the current frame.

This is valid for Mode-2 format.

H_ERR_R 8'h2c The Header Error flags in the sub header of the current frame.

bit7

M_EMIN (Error in MIN)

bit6

M_ESEC (Error in SEC)

bit5

M_EFRM (Error in FRM)

bit4

M_EMOD (Error in MODB)

bit3

M_EFN (Error in FN)

bit2

M_ECN (Error in CN)

bit1

M_ESM (Error in SM)

bit0

M_ECI (Error in CI)

H_BLKST_R 8'h2d Indicates that unexpected Sync has been detected.

bit7

Long Block

0 : Normal case.

1 : The CD-ROM decoder detects the Internal Synchronization pattern

but does not detect the External Synchronization pattern. The previous

frame has longer bytes of data than expect.

bit6

Short Block

0 : Normal case.

1 : The CD-ROM decoder detects the External Synchronization pattern

but does not detect the Internal Synchronization pattern. The previous

frame has shorter bytes of data than expect.

bit5

Invalid Block

0 : Normal case.

1 : The CD-ROM decoder does not detect either External or Internal

Synchronization pattern when Internal or External Synchronization

pattern is detected. Current frame data is invalid.

bit4:0

not used

// Write only registers (8'hB0  8'hBF reserved for cdrUnit - Write)

H_INPIF_W 8'hB1

bit7

M_BCKS1

bit6

M_BCKS0

bit7:6

Indicate the number of BCKs per 16-bit word

00 = 16 BCKs, Data valid at every BCK

01 = 24 BCKs. Data valid for the last 16 BCKs

10 = 24 BCKs. Data valid for the first 16 BCKs

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