|
Chip Homer |
www.DataSheet4U.com
Product Brief
Single Channel PCM / ADPCM Codec
CP1306
CP1306_PB_Rev1.0, March,2005
OVERVIEW
The CP1306 is a single channel PCM / ADPCM codec fabricated in advanced
low-power mixed-mode CMOS process. The CP1306 encodes the analog voice band
signal to 64 Kbps PCM (G.711) or 32 Kbps ADPCM (G.721) serial data, and decodes 64
Kbps PCM (G.711) or 32 Kbps ADPCM (G.721) serial data to analog voice band signal.
Its transmit/receive data mute, gain, side-tone attenuation, 12 dB loss PAD at receive
side and power down mode are programmable through a serial microcontroller interface.
FEATURES
1 channel PCM / ADPCM codec with Digital Signal Processing(DSP) technique
Voice companding algorithm:
ITU-T G.711
PCM (µ-law) @ 64 Kbps
ITU-T G.721
ADPCM @ 32 Kbps
Transmit/Receive synchronous mode only
Sampling frequency:
Master clock frequency:
fSYNC = 8 KHz
fMCLK = fSYNC×1296
Serial PCM/ADPCM transmission data rate from 64 Kbps to 2048 Kbps
Programmable digital filters to adapt transmission behaviors:
SSOP30
-40℃ ~ 85℃
Transmit Path
FLW
VINN
ADC
Tx-SW
Tx
Gain
PCM
Compressor
PCMSO
VREF VREF
ADPCM
PCMSI
ADPCMSO
ADPCMRI
PCMRO
VOUT DAC
Rx-SW
Rx PCM
Gain
Expander
PCMRI
Receive Path
Clock
Generator
Serial Microcontroller Interface
Copyright ©2005 Chiphomer Technology Limited
Page 1 of 1
www.DataSheet4U.com
Product Brief
Single Channel PCM / ADPCM Codec
Transmit/Receive mute
Transmit/Receive gain
Side tone path attenuation
12dB loss PAD at receive side
Power-down mode
On–chip precision reference voltage (Vref=1.4V ± 50mV)
Single 3V power supply (Min=2.7V, Max=3.6V)
Low power consumption:
In working mode: Idd = 8mA (typ)
In power down mode: Idd = 0.01mA (typ)
Serial microcontroller interface
Operating industrial temperature range: -40℃ ~ 85℃
SSOP30 package
CP1306
CP1306_PB_Rev1.0, March,2005
APPLICATIONS
Central office switch and PBXs
Digital cordless telephony systems
Voice over IP (VoIP )
TYPICAL APPLICATION
Input voice signal R1
R2
1 FLW
DVDD 30
20K 20K
2 NC
BCLK 29
3 VINN
SYNC 28
4 NC
PCMSO 27
5 VREF
PCMSI 26
0.1uF
10uF
6 NC
7 AVDD
ADPCMSO
ADPCMRI
25
24
10uF
8
9
NC
AGND
CP1306
PCMRO
PCMRI
23
22
Output voice signal
10 NC
11 VOUT
NC
MCLK
21
20
12 NC
CSN 19
13 NC
DCLK 18
14 DGND
DIN 17
Power-down / Reset
15 RESETN
DOUT 16
VDD
PCM
Interface
ADPCM Data
Master Clock
MCU
Interface
Chiphomer Technology Limited
Add: 4F, Building D, 1618 Yishan Road, Shanghai, P.R.C.
Tel: +86-(0)21-64058488, 64014543
Fax: +86-(0)21-64050030
Email: [email protected]
Web: www.chiphomer.com
Copyright ©2005 Chiphomer Technology Limited
Page 2 of 2
|