AT83SND1CXXX-ROTIL datasheet(69/212 Pages) ATMEL

69 / 212 page

4109J–8051–10/06

AT8xC51SND1C

Reset Value = 0011 1111b

Table 63. MP3STA Register

MP3STA (S:C8h Read Only) – MP3 Decoder Status Register

MPBBST

Bass Boost Bit

Set to enable the bass boost sound effect.

Clear to disable the bass boost sound effect.

CRCEN

CRC Check Enable Bit

Set to enable processing of frame that contains CRC error. Frame is played

whatever the error.

Clear to disable processing of frame that contains CRC error. Frame is skipped.

MSKANC

MPANC Flag Mask Bit

Set to prevent the MPANC flag from generating a MP3 interrupt.

Clear to allow the MPANC flag to generate a MP3 interrupt.

3MSKREQ

MPREQ Flag Mask Bit

Set to prevent the MPREQ flag from generating a MP3 interrupt.

Clear to allow the MPREQ flag to generate a MP3 interrupt.

2MSKLAY

ERRLAY Flag Mask Bit

Set to prevent the ERRLAY flag from generating a MP3 interrupt.

Clear to allow the ERRLAY flag to generate a MP3 interrupt.

MSKSYN

ERRSYN Flag Mask Bit

Set to prevent the ERRSYN flag from generating a MP3 interrupt.

Clear to allow the ERRSYN flag to generate a MP3 interrupt.

MSKCRC

ERRCRC Flag Mask Bit

Set to prevent the ERRCRC flag from generating a MP3 interrupt.

Clear to allow the ERRCRC flag to generate a MP3 interrupt.

7654

3210

MPANC

MPREQ

ERRLAY

ERRSYN

ERRCRC

MPFS1

MPFS0

MPVER

Bit

Number

Bit

Mnemonic

Description

7MPANC

Ancillary Data Available Flag

Set by hardware as soon as one ancillary data is available (buffer not empty).

Cleared by hardware when no more ancillary data is available (buffer empty).

6MPREQ

MP3 Data Request Flag

Set by hardware when MP3 decoder request data.

Cleared when reading MP3STA.

ERRLAY

Invalid Layer Error Flag

Set by hardware when an invalid layer is encountered.

Cleared when reading MP3STA.

ERRSYN

Frame Synchronization Error Flag

Set by hardware when no synchronization pattern is encountered in a frame.

Cleared when reading MP3STA.

ERRCRC

CRC Error Flag

Set by hardware when a frame handling CRC is corrupted.

Cleared when reading MP3STA.

Bit

Number

Bit

Mnemonic

Description

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