PT2037
Digitally Controlled Audio Processor
DESCRIPTION
The PT2037 is a multiple functions audio signal
processor, very low distortion and low noise are
obtained by the advanced CMOS fabricate technology.
All of characteristics and functions are designed for the
customer who needs high performance and better
hearing experience. This device provides a lot of new
features like soft-mute and zero-crossing mute to
minimize the noises during the audio sources are
switching. Further more, the device equipped
differential audio inputs to improve the Common Mode
Reject Ratio and it is very helpful to canceling ground
loop hum noises in the car and audio dock system.
FEATURES
•
Input multiplexer
- 4 Stereo input
- 1 Mono input
- 1 Differential input
- Selectable input gain for optimal adaptation to
different sources
•
Multiple MUTE function
- Software controlled: Direct Mute, Zero-Crossing
Mute and Soft Mute
- Hardware controlled: Soft Mute
•
Fully programmable loudness function
•
Volume control in 1dB steps including gain up to
16dB
•
3 band (Bass, Middle and Treble ) tone control
•
Four independent speaker attenuators control in
1dB steps for balance and fader facilities
•
Programmable threshold for pause and zero cross
mute detector
•
All functions programmable via serial I
2
C bus
APPLICATIONS
•
Car audio
•
Audio dock system
•
Mini compo system
BLOCK DIAGRAM
MUXOUT_L
21
STEREO1_L
STEREO2_L
STEREO3_L
STEREO4_L
DIFF_L
DIFFGND_L
MONO
STEREO1_R
STEREO2_R
STEREO3_R
STEREO4_R
DIFF_R
DIFFGND_R
DVDD
AVDD
16
17
18
15
14
13
11
8
9
10
7
6
5
41
42
SUPPLY
SPEAKER
ATT
MUTE CONTROL
SOFT,ZERO
39
CREF
3
MUXOUT_R
2
IN_R
4
LOUD_R
1
TREB_R
23
MID_RO
22
MID_RI
27
BASS_RO
26
BASS_RI
28
SMEXT
35
PAUSE
19
CSM
32
OUT_RF
INPUT MULTIPLEXER
IN GAIN
VOLUME
+LOUDN
43
AGND
IN GAIN
VOLUME
+LOUDN
TREBLE
MIDDLE
BASS
SOFT
MUTE
BASS_LO
BASS_LI
MID_LO
LOUD_L
TREB_L
MID_LI
IN_L
20
12
44
30
31
25
24
SPEAKER
ATT
SPEAKER
ATT
34
OUT_LF
33
OUT_LR
40
38
I2C BUS DECODER +LATCHES
37
36
ADDR
SCL
SDA
DGND
TREBLE
MIDDLE
BASS
SOFT
MUTE
SPEAKER
ATT
29
OUT_RR
Tel: 886-66296288
‧
Fax: 886-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PTC [ PRINCETON TECHNOLOGY CORP ]
