2000 Jul 31 25
NXP Semiconductors Product specification
Audio CODEC UDA1342TS
Table 36 Bass boost settings
9.18 Treble
A 2-bit value to program the treble setting. The used set
depends on the setting of bits M1 and M0. At f
s
=44.1kHz
the −3 dB point for minimum setting is 3.0 kHz and the
−3 dB point for maximum setting is 1.5 kHz. The default
value is 00.
Table 37 Treble settings
9.19 Silence detector switch
A 1-bit value to enable the silence detector.
Table 38 Silence detector switch
9.20 Mute
Three 1-bit values to enable the digital mute. Bit MT is the
master mute, using bit MTA the signal from the digital
interface can be soft muted when the DAC mixer is
enabled and using bit MTB the signal from ADC can be
soft muted.
Table 39 Mute
9.21 Quick mute mode
A 1-bit value to enable the quick mute function of the
master mute.
Table 40 Quick mute mode settings
9.22 De-emphasis
A 3-bit value to enable the digital de-emphasis filter.
BB3 BB2 BB1 BB0
BASS BOOST (dB)
FLAT MIN. MAX.
0000000
0001022
0010044
0011066
0100088
010101010
011001212
011101414
100001616
100101818
101001820
101101822
110001824
110101824
111001824
111101824
TR1 TR0
TREBLE (dB)
FLAT MIN. MAX.
00 0 0 0
01 0 2 2
10 0 4 4
11 0 6 6
SDS FUNCTION
0 disable silence detector
1 enable silence detector
MT
MTA
MTB
FUNCTION
0 no muting
1muting
QM FUNCTION
0 soft mute mode
1 quick mute mode
