tfa9879hn NXP Semiconductors, tfa9879hn Datasheet - Page 20

• Manufacturer Part Number: tfa9879hn
• Description: Mono Btl Class-d Audio Amplifier For Portable Applications With Digital Input
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TFA9879_1
Preliminary data sheet
Fig 13. DRC attack and release behavior
release level (RMS-value)
audio out
attack level (peak value)
attack level (peak value)
audio in
Table 11.
[1]
[2]
[3]
[4]
Control value:
attack level
0000
1010
1011
1100
1101
1110
1111
0001
0010
0011
0100
0101
0110
0111
1000
1001
The control value is selected via bits AT_LVL in the DRC control register (see
The control value is selected via bits RL_LVL in the DRC control register (see
0 dB (RMS) release level equals 0 dB (peak) attack level.
Default value.
[4]
DRC attack and release levels
[1]
All information provided in this document is subject to legal disclaimers.
Attack level based on
peak value; absolute
value (dBFS)
12
10
8
6
5
4
3
2
1
0
1
2
4
6
8
10
Rev. 01 — 8 April 2010
attack rate (dB/ms)
Mono BTL class-D audio amplifier with digital input
Control value:
release level
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
[4]
RMS value
release rate (dB/ms)
[2]
Release level based on RMS
value (relative to the attack
level
29
26
23
20
18
16
8
6
4
3
2
1
0
14
12
10
[3]
Table
Table
010aaa654
) (dB)
TFA9879
© NXP B.V. 2010. All rights reserved.
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