Table 77. MP3STA1 Register
MP3STA1 (S:AFh) – MP3 Decoder Status Register 1
7
-
6
-
5
-
4
3
2
-
1
-
0
-
MPFREQ
MPFREQ
Bit
Bit
Number
Mnemonic Description
Reserved
7 - 5
4
-
The value read from these bits is always 0. Do not set these bits.
MP3 Frame Data Request Flag
MPFREQ Set by hardware when MP3 decoder request data.
Cleared when MP3 decoder no more request data .
MP3 Byte Data Request Flag
MPBREQ Set by hardware when MP3 decoder request data.
Cleared when writing to MP3DAT.
3
Reserved
2 - 0
-
The value read from these bits is always 0. Do not set these bits.
Reset Value = 0001 0001b
Table 78. MP3ANC Register
MP3ANC (S:ADh Read Only) – MP3 Ancillary Data Register
7
6
5
4
3
2
1
0
AND7
AND6
AND5
AND4
AND3
AND2
AND1
AND0
Bit
Bit
Number
Mnemonic Description
Ancillary Data Buffer
MP3 ancillary data Byte buffer.
7 - 0
AND7:0
Reset Value = 0000 0000b
Table 79. MP3VOL Register
MP3VOL (S:9Eh) – MP3 Volume Left Control Register
7
-
6
-
5
-
4
3
2
1
0
VOL4
VOL3
VOL2
VOL1
VOL0
Bit
Bit
Number
Mnemonic Description
Reserved
7 - 5
4 - 0
-
The value read from these bits is always 0. Do not set these bits.
Volume Left Value
Refer to Table 71 for the left channel volume control description.
VOL4:0
Reset Value = 0000 0000b
70
AT8xC51SND2C
4341D–MP3–04/05
ATMEL [ ATMEL ]
