DS2132A

DS2132A Datasheet

DS2132A/Q

Part	Datasheet
DS2132A	DS2132A (pdf)

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DS2132A/Q DS2132A/Q Digital Answering Machine Processor FEATURES • Two high quality speech compression algorithms per- mit either 7 or 14 minutes of speech storage in a single 4 Mbit DRAM or ARAM • Economical three-wire data/control/status port frees up microcontroller port pins • Detects and generates the 12 standard DTMF tones plus the A/B/C/D tones • Detects CCITT T.30 FAX calling tone 1100 Hz • Generates musical tones which allow “melodies-on- hold” or customizable prompts • Echo cancellation for improved DTMF receiver per- formance • Precise signal level detection capability • Record/Playback gain control • 28-pin DIP or PLCC DS2132AQ packages There is a series of Application Notes that accompany this data sheet. DESCRIPTION The DS2132A Digital Answering Machine Processor is a Digital Signal Processor DSP optimized for the compression/expansion of PCM coded voice to/from an extremely low bit rate. The DS2132A contains two advanced speech compression algorithms that offer outstanding fidelity. The Standard Record/Playback algorithm compresses speech to 9.8Kbps and the Extended Record/Playback algorithm compresses speech to 4.9Kbps. The DS2132A is ideal for embedded applications such as digital answering machines, voice mail, voice annunciators, and any other device that needs to maximize speech storage in a limited memory space. A simple PIN ASSIGNMENT PD 1 RST 2 GND 3 GND 4 PD 5 VCC 6 VCC 7 VCC 8 VCC 9 VCC 10 VCC 11 GND 12 MCLK 13 GND 14 28 VCC 27 PCMIN 26 CLK 25 FS 24 PCMOUT 23 TRI_IN 22 GND 21 GND 20 CDOUT 19 TRI_OUT 18 FS 17 CLK 16 CDIN 15 NC DS2132A 28-PIN DIP 600 MIL GND RST PD VCC PCMIN CLK PD VCC 5 4 3 2 1 28 27 2625 11 12 13 14 15 16 17 1819 FS PCMOUT TRI_IN GND CDOUT TRI_OUT GND MCLK GND NC CDIN CLK FS DS2132AQ 28-PIN PLCC three wire interface to the embedded microcontroller frees up valuable controller port pins for other uses and simplifies the software needed to transfer speech data, issue commands, and receive DTMF/energy level/status information. The DS2132A detects and generates all 16 DTMF tones and can also generate a wide variety of call progress tones. In addition, the DS2132A provides CCITT Rec. T.30 FAX calling tone detection which enables the answering machine to determine if the incoming call is a voice or FAX transmission. The energy level detector allows the microcontroller to perform call progress detection and automatic gain control functions. ECopyright 1995 by Dallas Semiconductor Corporation. All Rights Reserved. For important information regarding patents and other intellectual property rights, please refer to Dallas Semiconductor data books. 041295 1/17

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DS2132A/Q

DS2132A/Q Digital Answering Machine Processor

FEATURES
• Two high quality speech compression algorithms per-
mit either 7 or 14 minutes of speech storage in a single 4 Mbit DRAM or ARAM
• Economical three-wire data/control/status port frees
up microcontroller port pins
• Detects and generates the 12 standard DTMF tones
plus the A/B/C/D tones
• Detects CCITT T.30 FAX calling tone 1100 Hz
• Generates musical tones which allow “melodies-on-
hold” or customizable prompts
• Echo cancellation for improved DTMF receiver per-
formance
• Precise signal level detection capability
• Record/Playback gain control
• 28-pin DIP or PLCC DS2132AQ packages

There is a series of Application Notes that accompany this data sheet.

DESCRIPTION The DS2132A Digital Answering Machine Processor is a Digital Signal Processor DSP optimized for the compression/expansion of PCM coded voice to/from an extremely low bit rate. The DS2132A contains two advanced speech compression algorithms that offer outstanding fidelity. The Standard Record/Playback algorithm compresses speech to 9.8Kbps and the Extended Record/Playback algorithm compresses speech to 4.9Kbps.

The DS2132A is ideal for embedded applications such as digital answering machines, voice mail, voice annunciators, and any other device that needs to maximize speech storage in a limited memory space. A simple

PIN ASSIGNMENT

PD 1 RST 2

GND 3

GND 4 PD 5

VCC 6 VCC 7 VCC 8 VCC 9 VCC 10 VCC 11 GND 12 MCLK 13 GND 14
28 VCC
27 PCMIN 26 CLK
25 FS 24 PCMOUT 23 TRI_IN 22 GND 21 GND 20 CDOUT 19 TRI_OUT 18 FS 17 CLK 16 CDIN 15 NC

DS2132A 28-PIN DIP 600 MIL

GND RST PD VCC PCMIN CLK

PD VCC
5 4 3 2 1 28 27 2625
11 12 13 14 15
16 17 1819

FS PCMOUT TRI_IN GND CDOUT

TRI_OUT

GND MCLK

GND NC

CDIN CLK FS

DS2132AQ 28-PIN PLCC
three wire interface to the embedded microcontroller frees up valuable controller port pins for other uses and simplifies the software needed to transfer speech data, issue commands, and receive DTMF/energy level/status information. The DS2132A detects and generates all 16 DTMF tones and can also generate a wide variety of call progress tones. In addition, the DS2132A provides CCITT Rec. T.30 FAX calling tone detection which enables the answering machine to determine if the incoming call is a voice or FAX transmission. The energy level detector allows the microcontroller to perform call progress detection and automatic gain control functions.

ECopyright 1995 by Dallas Semiconductor Corporation. All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to

Dallas Semiconductor data books.
041295 1/17

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived DS2132A Datasheet file may be downloaded here without warranties.

Datasheet ID: DS2132A 647168