AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 70
AT83C51SND1C_03
Manufacturer Part Number
AT83C51SND1C_03
Description
Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT83C51SND1C_03.pdf
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AT8xC51SND1C
Table 75. MP3STA1 Register
MP3STA1 (S:AFh) – MP3 Decoder Status Register 1
Reset Value = 0001 0001b
Table 76. MP3ANC Register
MP3ANC (S:ADh Read Only) – MP3 Ancillary Data Register
Reset Value = 0000 0000b
Table 77. MP3VOL Register
MP3VOL (S:9Eh) – MP3 Volume Left Control Register
Reset Value = 0000 0000b
Number
Number
Number
AND7
7 - 5
2 - 0
7 - 0
7 - 5
4 - 0
Bit
Bit
Bit
7
7
7
-
-
4
3
Mnemonic Description
Mnemonic Description
Mnemonic Description
MPBREQ
MPFREQ
AND7:0
VOL4:0
AND6
Bit
Bit
Bit
6
6
6
-
-
-
-
-
Reserved
The value read from these bits is always 0. Do not set these bits.
MP3 Frame Data Request Flag
Set by hardware when MP3 decoder request data.
Cleared when MP3 decoder no more request data .
MP3 Byte Data Request Flag
Set by hardware when MP3 decoder request data.
Cleared when writing to MP3DAT.
Reserved
The value read from these bits is always 0. Do not set these bits.
Ancillary Data Buffer
MP3 ancillary data Byte buffer.
Reserved
The value read from these bits is always 0. Do not set these bits.
Volume Left Value
Refer to Table 69 for the left channel volume control description.
AND5
5
5
5
-
-
MPFREQ
AND4
VOL4
4
4
4
MPFREQ
AND3
VOL3
3
3
3
AND2
VOL2
2
2
2
-
AND1
VOL1
1
1
1
-
4109E–8051–06/03
AND0
VOL0
0
0
0
-
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