cs43l43 Cirrus Logic, Inc., cs43l43 Datasheet - Page 11

• Manufacturer Part Number: cs43l43
• Description: Low-voltage Stereo D/a Converter With Headphone Amplifier
• Manufacturer: Cirrus Logic, Inc.

DS479PP3
3.6.4 Auxilliary Mute Control
For critical applications, the Popguard
neous audible artifacts on the headphone outputs during power-up. For these applications, an option-
al external mute can be used to maintain an absolute minimum of extraneous clicks and pops. Please
see Figures 6 and 7 for the suggested headphone mute circuit.
The Mute Control will need to be generated externally from a DSP or Microcontroller. See Figure 7
for /RST and Mute Control timing.
From C S 43L43 P in
From C S 43L43 P in
M ute C ontrol from uC or D S P
~ 3 0 0 m s e c
1 0 (H P _A )
1 4 (H P _B )
~ 9 0 0 m s e c
Figure 6. Optional Headphone Mute Circuit
Figure 7. Timing for Headphone Mute
2 2 0uF
2 2 0uF
®
100K
Transient Control may not be sufficient in eliminating extra-
1k
1k
47u H
47u H
T he M otorola M O SFET s show n have been
tested to w ork properly, how ever, an
equivalent device m ay be used.
M G S F1N H 02E LT
M G S F1N H 02E LT
H eadphone O utput at
pin of part
/R ST
M ute C ontrol from
M icroC ontroller
D SP or
H eadphones
16
16
CS43L43
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