AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 69

• Manufacturer Part Number: AT83C51SND1C_03
• Description: Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
• Manufacturer: ATMEL [ATMEL Corporation]

4109E–8051–06/03
Table 73. MP3STA Register
MP3STA (S:C8h Read Only) – MP3 Decoder Status Register
Reset Value = 0000 0001b
Table 74. MP3DAT Register
MP3DAT (S:ACh) – MP3 Data Register
Reset Value = 0000 0000b
Number
Number
MPANC
MPD7
2 - 1
7 - 0
Bit
Bit
7
7
7
6
5
4
3
0
Mnemonic Description
Mnemonic Description
ERRSYN
ERRCRC
MPFS1:0
MPREQ
ERRLAY
MPREQ
MPD7:0
MPANC
MPVER
MPD6
Bit
Bit
6
6
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).
MP3 Data Request Flag
Set by hardware when MP3 decoder request data.
Cleared when reading MP3STA.
Invalid Layer Error Flag
Set by hardware when an invalid layer is encountered.
Cleared when reading MP3STA.
Frame Synchronization Error Flag
Set by hardware when no synchronization pattern is encountered in a frame.
Cleared when reading MP3STA.
CRC Error Flag
Set by hardware when a frame handling CRC is corrupted.
Cleared when reading MP3STA.
Frequency Sampling Bits
Refer to Table 71 for bits description.
MPEG Version Bit
Set by the MP3 decoder when the loaded frame is a MPEG I frame.
Cleared by the MP3 decoder when the loaded frame is a MPEG II frame.
Input Stream Data Buffer
8-bit MP3 stream data input buffer.
ERRLAY
MPD5
5
5
ERRSYN
MPD4
4
4
ERRCRC
MPD3
3
3
AT8xC51SND1C
MPFS1
MPD2
2
2
MPFS0
MPD1
1
1
MPVER
MPD0
0
0
69