TAS5715
www.ti.com
SLOS645 –AUGUST 2010
VOLUME REGISTERS (0x07, 0x08, 0x09, 0x0C)
Step size is 0.5 dB.
Master volume
– 0x07 (default is mute)
– 0x08 (default is 0 dB)
– 0x09 (default is 0 dB)
– 0x0C (default is 0 dB)
Channel-1 volume
Channel-2 volume
Headphone volume
Volume in the TAS5715 is not intended for dynamic changes. Channel volumes are set during initialization.
Master volume is written with a value 0xFF to MUTE and with a value of 0x30 to UNMUTE during normal mode.
When DRC functionality is used, the maximum allowed volume (sum of channel and master volume ) is 15.5 dB.
When DRC is enabled, a MUTE command does not completely mute the system. The actual mute level depends
on the volume settings and modulation index.
FINE VOLUME SETTING:
TAS5715 has input mixers (0x73 , 0x77) that can be fine-tuned with a 3.23 format number to achieve the fine
volume setting.
To achieve 12.125 db of master volume, set the mixer to 0.125 db and set 0x07 (maser volume) to 12 db. The
advantage is 0x73 and 0x77 can be set to a much finer setting using 3.23 format numbers, providing the
flexibility to adjust output power precisely.
Table 11. Volume Registers (0x07, 0x08, 0x09, 0x0C)
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
FUNCTION
0
0
0
0
0
0
0
0
24 dB
(1)
0
0
1
1
0
0
0
0
0 dB (default for individual channel volume)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
–103 dB
Soft mute
(1) Default values are in bold.
Table 12. Master Volume Table
HEX
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
dB
24
HEX
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
40
dB
0
HEX
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
70
dB
–24
HEX
90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F
A0
dB
–48
HEX
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CC
CD
CE
CF
D0
dB
–72
HEX
F0
F1
F2
F3
F4
F5
F6
F7
F8
F8
FA
FB
FC
FD
FE
FF
dB
–96
23.5
23
–0.5
–1
–24.5
–25
–48.5
–49
–72.5
–73
–96.5
–97
22.5
22
–1.5
–2
–25.5
–26
–49.5
–50
–73.5
–74
–97.5
–98
21.5
21
–2.5
–3
–26.5
–27
–50.5
–51
–74.5
–75
–98.5
–99
20.5
20
–3.5
–4
–27.5
–28
–51.5
–52
–75.5
–76
–99.5
–100
19.5
19
–4.5
–5
–28.5
–29
–52.5
–53
–76.5
–77
18.5
18
–5.5
–6
–29.5
–30
–53.5
–54
–77.5
–78
17.5
17
–6.5
–7
–30.5
–31
–54.5
–55
–78.5
–79
16.5
16
–7.5
–8
–31.5
–32
–55.5
–56
–79.5
–80
Copyright © 2010, Texas Instruments Incorporated
Submit Documentation Feedback
55
Product Folder Link(s): TAS5715
TI [ TEXAS INSTRUMENTS ]
