tda9870ah NXP Semiconductors, tda9870ah Datasheet - Page 16

• Manufacturer Part Number: tda9870ah
• Description: Digital Tv Sound Processor Dtvsp
• Manufacturer: NXP Semiconductors

Philips Semiconductors
6.2.12
Table 4 Overview of DSP functions
1999 Dec 20
Bass control for loudspeaker and
headphone output
Treble control for loudspeaker and
headphone output
Contour for loudspeaker output
Bass boost for loudspeaker output
Volume control for each separate
channel in loudspeaker and
headphone output
Soft mute for loudspeaker and
headphone output
Spatial effects
Pseudo stereo
Beeper additional to the signal in the
loudspeaker and headphone channel
Automatic Volume Level (AVL)
General
Level adjust I
Level adjust I
Level adjust analog crossbar path
Digital TV Sound Processor (DTVSP)
DSP
FUNCTION
2
2
FUNCTIONS
S1 and I
S1 and I
2
2
S2 inputs
S2 outputs
EXPERT
MODE
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
no
no
no
no
control range
resolution
resolution at frequency
control range
resolution
resolution at frequency
control range
resolution
resolution at frequency
control range
resolution
resolution at frequency
corner frequency
control range
resolution
mute position at step
processing time
anti-phase crosstalk positions
90 degrees phase shift at frequency
beep frequencies
control range
resolution
mute position at step
step width
AVL output level for an input level
between 0 and 29 dB full-scale
attack time
decay time constant
control range
resolution
control range
resolution
mute position at step
control positions
3 dB lower corner frequency of DSP 10
1 dB bandwidth of DSP
16
PARAMETER
1
40
1
14
0 to +18
1
40
0 to +20
2
20
350
1
10101100
32
30, 40 and 52
150, 200 and 300
see Section 10.3.38
0 to 93
3
00100000
quasi continuously
10
2, 4 and 8
14.5
1
1
00010000
0, 3, 6 and 9
12 to +15
12 to +12
83 to +24
23
15 to +15
15 to +15
VALUE
Product specification
TDA9870A
dB
dB
Hz
dB
dB
kHz
dB
dB
Hz
dB
dB
Hz
Hz
dB
dB
ms
%
Hz
dB
dB
dB
ms
s
Hz
kHz
dB
dB
dB
dB
dB
UNIT