TAS5717_14 Datasheet, PDF (46/68 Pages) Texas Instruments – 10-W/15-W Digital Audio Power Amplifier with Integrated Cap-Free HP Amplifier

TAS5717
TAS5719
SLOS655A – NOVEMBER 2010 – REVISED FEBRUARY 2011
VOLUME CONFIGURATION REGISTER (0x0E)
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Bits
D2–D0:
Volume slew rate (used to control volume change and MUTE ramp rates). These bits control the
number of steps in a volume ramp. Volume steps occur at a rate that depends on the sample rate of
the I²S data as follows:
Sample rate (kHz)
Approximate ramp rate
8/16/32
125 μs/step
11.025/22.05/44.1
90.7 μs/step
12/24/48
83.3 μs/step
D7 D6 D5 D4 D3 D2
10010 –
––––– 0
––––– 0
––––– 0
––––– 0
––––– 1
(1) Default values are in bold.
Table 12. Volume Configuration Register (0x0E)
D1 D0
FUNCTION
–
– Reserved⁽¹⁾
0
0 Volume slew 512 steps (43 ms volume ramp time at 48 kHz)⁽¹⁾
0
1 Volume slew 1024 steps (85-ms volume ramp time at 48 kHz)
1
0 Volume slew 2048 steps (171-ms volume ramp time at 48 kHz)
1
1 Volume slew 256 steps (21-ms volume ramp time at 48 kHz)
X X Reserved
MODULATION LIMIT REGISTER (0x10)
D7
D6
D5
0
0
0
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(1) Default values are in bold.
Table 13. Modulation Limit Register (0x10)
D4
D3
D2
D1
D0
0
0
–
–
–
–
–
0
0
0
–
–
0
0
1
–
–
0
1
0
–
–
0
1
1
–
–
1
0
0
–
–
1
0
1
–
–
1
1
0
–
–
1
1
1
MODULATION LIMIT
Reserved
99.2%
98.4%
97.7% ⁽¹⁾
96.9%
96.1%
95.3%
94.5%
93.8%
46
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