DTMFDECODER-RD Silicon Laboratories Inc, DTMFDECODER-RD Datasheet

KIT REF DESIGN DTMF DECODER

DTMFDECODER-RD

Manufacturer Part Number
DTMFDECODER-RD
Description
KIT REF DESIGN DTMF DECODER
Manufacturer
Silicon Laboratories Inc
Datasheets

Specifications of DTMFDECODER-RD

Mfg Application Notes
DTMF Decoder Ref Design AppNote
Main Purpose
Telecom, DTMF Decoder
Embedded
No
Utilized Ic / Part
C8051F300
Primary Attributes
8kHz Sampling Rate ADC
Secondary Attributes
16 Goertzel Filters
Processor To Be Evaluated
C8051F300
Interface Type
RS-232
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Other names
336-1283
DTMF D
1. Kit Contents
The DTMF Decoder Reference Design Kit includes the following items:
2. DTMF Decoder Overview
The DTMF Decoder Evaluation Board contains both a DTMF Decoder and DTMF Generator. The evaluation board
provides a hardware platform for evaluating the software provided in the DTMF Decoder Reference Design and
prototyping telephony applications using the C8051F300 MCU. The DTMF Decoder Evaluation board is shown in
Figure 1.
The DTMF Decoder Reference Design (available on the CD) includes the following:
Rev. 0.1 11/05
DTMF Decoder Evaluation Board.
Universal (100–240 V, 50–60 Hz) AC to DC Power Adapter.
DTMF Decoder Kit User’s Guide (this document).
Reference Design CD containing the following items:
Background and theory of DTMF decoding using the Goertzel Algorithm.
Description of a software implementation for the C8051F300 MCU.
Full C source code for the DTMF decoder and generator. The software is available on the Reference Design
Kit CD (AN218SW.zip) and on the
DTMF Decoder Reference Design (AN218) and associated software (AN218SW.zip).
Keil Software 8051 Development Tools (evaluation assembler, 2 kB limited compiler, and linker).
All DTMF Decoder related documentation in PDF format.
E C O D E R
Figure 1. DTMF Decoder Evaluation Board
K
Copyright © 2005 by Silicon Laboratories
Silicon Laboratories
I T
U
S E R
S
website.
G
U I D E
DTMF Generator
DTMF Decoder
D T M F - R D
DTMF-RD

Related parts for DTMFDECODER-RD

DTMFDECODER-RD Summary of contents

Page 1

DTMF Kit Contents The DTMF Decoder Reference Design Kit includes the following items: DTMF Decoder Evaluation Board. Universal (100–240 V, 50–60 Hz Power Adapter. DTMF Decoder Kit User’s Guide ...

Page 2

DTMF-RD 2.1. DTMF Decoder The DTMF decoder section of the evaluation board can accept DTMF signals from three input sources as shown in Figure 2. The Audio Jack input source allows direct connection sound card and accepts ...

Page 3

DTMF Demonstration The DTMF Decoder Evaluation Board is factory pre-programmed with both the DTMF decoder and generator firmware. For this demonstration, connect the output of the DTMF generator to the input of the DTMF decoder. 1. Verify that J10 ...

Page 4

DTMF-RD 5. Schematic M1CP0+ VDD1 R29 10K C22 C23 0u1F 4n7F GND U5 GND C8051F300 M1P07 1 10 M1ADC0 P0.0 P0.7 M1CP0 P0.1 P0.6 R30 3V3 3 8 Vdd RST 470R 4 7 P0.2 P0.5 GND R24 5 ...

Page 5

VDD2 R17 680R 2 POT2 10K VDD2 DTMF In R16 TP7 1K8 R11 1K2 GND GND U1B P2 From soundcard AUDIO CON C4 100R LMV324MT 2u2F GND 10K GND POT1 3 ...

Page 6

DTMF-RD VDD2 U8 C8051F300 1 10 P0.0 P0 P0.1 P0 Vdd RST 4 7 P0.2 P0 P0.3 P0.4 11 GND C24 0u1F TP27 R40 1K MCU2 GND GND TP28 DTMF Generator M1nRST M1nRST M2C2CLK ...

Page 7

N : OTES Rev. 0.1 DTMF-RD 7 ...

Page 8

... Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized ap- plication, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. ...

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