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PDF PT2348 Data sheet ( Hoja de datos )
| Número de pieza | PT2348 | |
| Descripción | 4.1-Channel Audio Processor | |
| Fabricantes | PTC | |
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Hay una vista previa y un enlace de descarga de PT2348 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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Princeton Technology Corp.
ANGUS ELECTRONICS CO., LTD
Tel: (852) 2345 0540 Fax: (852) 2345 9948 Web Site: www.angus.com.hk
Preliminary PT2348
4.1-Channel Audio Processor with Subwoofer
DESCRIPTION
The PT2348 is a 4.1CH audio processor designed for
Car Audio purpose. Using I2C interface controls all of
the functions. Like most of audio processor, it
equipped up to 4 stereo sources input with adjustable
gain, master volume with adaptive loudness, treble
and bass tone control.
In a car entertainment system needs front and rear
seat individual control, the PT2348 provides separate
input source selection and output volume adjust ; a
special design mixing amp is very easy combine the
navigation system or cellular phone’s voice into the car
audio system.
APPLICATION
• Car Audio
FEATURES
• Controlled by I²C Interface
• 4 Stereo Inputs (including 1 quasi-differential input)
with selectable input gain
• 2 Channels Electronic Volume： +15 to -79dB with
1dB/step
• 1 Subwoofer Output: +15 to -79dB with 1dB/step
• Adjustable crossover frequency for Subwoofer
• Tone Control (Bass and Treble): -15 to +15dB,
1dB/step
• Input Gain Control: 0 to +15dB, 1dB/step
• Loudness: 0 to -15dB, 1dB/step
• 4 independent speaker outputs: +15 to -79dB with
1dB/step & independent programmable mix
input with 50% mixing ratio for front speakers
• Low Distortion and Low Noise
• 36-pin SSOP package
BLOCK DIAGRAM
PRE1.0
1
1 page  
Princeton Technology Corp.
ANGUS ELECTRONICS CO., LTD
Tel: (852) 2345 0540 Fax: (852) 2345 9948 Web Site: www.angus.com.hk
PT2348
FUNCTION DESCRIPTIONS
INPUT MULTIPLEXER
The PT2348 provides pseudo-differential stereo input and single-ended stereo input, the pseudo differential input also
could configured as single-ended input 4th, in this configuration the DIFFG pin is no connection.
OUTPUT MULTIPLEXER
Pin 31 is bi-direction function, if D5 of data-byte 03H is 0 the pin 31 will becomes an input pin, an auxiliary source (such
navigation system or cellular phone) can be mix with front channel output. Otherwise D5=1 the pin 31 will outputs
subwoofer signal. The rear output signal is flexible from second sources selector or sync with front channel signal. Each
channel’s output level can be controlled from +15dB to -79dB and individually, it is well to be the balance and fader
control.
MIX IN
MAIN
SECOND
Bass L+R
Subwoofer
Filter
Front
Rear
Subwoofer Out
PRE1.0
5
5 Page 
Princeton Technology Corp.
ANGUS ELECTRONICS CO., LTD
Tel: (852) 2345 0540 Fax: (852) 2345 9948 Web Site: www.angus.com.hk
PT2348
LOUDNESS / SUBWOOFER (01H)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
0 0000
0 0001
0 0010
0 0011
0 0100
0 0101
0 0110
0 0111
0 1000
0 1001
0 1010
0 1011
0 1100
0 1101
0 1110
0 1111
00
01
001
010
011
Function
Loudness
0dB
-1dB
-2dB
-3dB
-4dB
-5dB
-6dB
-7dB
-8dB
-9dB
-10dB
-11dB
-12dB
-13dB
-14dB
-15dB
Loudness On
Loudness Off
Subwoofer
Cut-off Frequency
80Hz
120Hz
160Hz
PRE1.0
11
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet PT2348.PDF ] | |
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