tfa9879hn NXP Semiconductors, tfa9879hn Datasheet - Page 31

• 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
10.4.4 Bypass control
10.4.5 Dynamic range compressor
Table 27.
Table 28.
Bit
15:8
7:6
5:4
3
2
1
0
Bit
3:0
15:12 AT_LVL
11:8
37:4
L_OCP
L_OTP
CLIPCTRL
HPF_BP
DRC_BP
EQ_BP
RL_RATE
Symbol
reserved
Symbol
AT_RATE
RL_LVL
Bypass control register (addresses 0Fh) bit description
DRC control register (addresses 10h) bit description
All information provided in this document is subject to legal disclaimers.
Access
R/W
R/W
R/W
R/W
R/W
R/W
Access Default
R/W
R/W
R/W
R/W
Rev. 01 — 8 April 2010
1001
0010
1011
1010
10
01
0
0
1
Default
0x00
1
Mono BTL class-D audio amplifier with digital input
Description
dynamic range compressor attack level; see
the attack level as a function of the value of AT_LTV.
dynamic range compressor attack rate; see
the attack rate as a function of the value of AT_RATE
dynamic range compressor release level; see
for the release level as a function of the value of
RL_LTV.
dynamic range compressor release rate; see
for the release rate as a function of the value of
RL_RATE
Description
overcurrent protection timer setting:
overtemperature protection timer setting:
clip control bypass setting, see
high-pass filter bypass setting:
dynamic range compressor bypass setting:
equalizer bypass setting:
00: 4.5 s floating when an overcurrent is detected
01: 27.5 s floating when an overcurrent is detected
10: 10 ms floating when an overcurrent is detected
11: no recovery (stays floating) when an overcurrent
is detected
00: 4.5 s floating when an overtemperature is
detected
01: 100 ms floating when an overtemperature is
detected
10: 1 s floating when an overtemperature is detected
11: no recovery (stays floating) when an
overtemperature is detected
0: clip control on (smooth clipping)
1: clip control off (maximum power)
0: high-pass filter active
1: high-pass filter bypassed
0: dynamic range compression active
1: dynamic range compression bypassed
0: equalizer active
1: equalizer bypassed
Section
TFA9879
© NXP B.V. 2010. All rights reserved.
9.3:
Table 12
Table 11
Table 12
Table 11
31 of 60
for
for