Table 173. APTIM2 Register
APTIM2 (2.C9h) – Audio Processor Timer Register 2
7
6
5
4
3
2
1
0
APT23
APT22
APT21
APT20
APT19
APT18
APT17
APT16
Bit
Bit
Number
Mnemonic Description
7-0
APT23:16 Audio Processor Timer Most Significant Byte.
Reset Value = 0000 0000b
Table 174. APRDVOL, APLDVOL, APBDVOL, APMDVOL, APTDVOL Registers
APRDVOL, APLDVOL, APBDVOL, APMDVOL, APTDVOL (2.F1h, 2.F2h, 2.F3h, 2.F4h,
2.F5h) – Audio Processor Right, Left, Bass, Medium, Treble Digital Volume Registers
7
6
5
4
3
2
1
0
-
-
-
ADVOL4
ADVOL3
ADVOL2
ADVOL1
ADVOL0
Bit
Bit
Number
Mnemonic Description
Reserved
6-5
4-0
-
The value read from these bits is always 0. Do not set these bits.
Digital Volume
ADVOL4:0
Refer to Table 154 for information on gain control values.
Reset Value = 0000 0000b
Table 175. APEBS Register
APEBS (2.F6h) - Audio Processor Equalizer Band Select Register
7
6
5
4
3
2
1
0
-
-
-
-
0
EQBS2
EQBS1
EQBS0
Bit
Bit
Number
Mnemonic Description
Reserved
7-4
3
-
The value read from these bits is always 0. Do not set these bits.
Always Cleared
0
This bit is permanently cleared by hardware to allow INC APEBS without
affecting bits 7-4.
Equalizer Band Selection
2-0
EQBS2:0
000b: lowest frequency band to 111b highest frequency band.
162
AT85C51SND3Bx
7632A–MP3–03/06
ATMEL [ ATMEL ]
