AT75C1010 Datasheet

IC型號(hào)：
AT75C1010
PDF描述：
AT75C1010 Telephony Software Module [Updated 11/01. 29 Pages...
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272.05KB
PDF頁數(shù)：
29頁
芯片廠家：
ETC

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Features

鈥?/div>

Software Module Dedicated to Telephony Signaling

鈥?/div>

Optimized for the AT75 Series Smart Internet Appliance Processor (SIAP

鈩?/div>

)

鈥?/div>

Includes Several Run-time Configurable Independent Algorithms

鈥?Caller ID Type I (On-hook) and Type II (Off-hook)

鈥?DTMF Generator

鈥?DTMF Detector

鈥?Arbitrary Tone Generator

鈥?/div>

Compliant with ITU-T V.23 and Bell 202 Standards

鈥?/div>

Available With a uClinux

廬

Device Driver

Description

The AT75C1010 is a software module designed to run on the OakDSPCore

廬

sub-

system of the AT75 Series Smart Internet Appliance Processor. It implements

commonly used telephony algorithms:

鈥?/div>

A DTMF generator to dial phone numbers.

A DTMF detector to decode incoming DTMF signaling.

An arbitrary tone generator that can be used to generate any frequency during a

programmable duration.

A Caller ID decoder that supports Type I and Type II, and two standard modulation

schemes (Bellcore and V.23).

Smart Internet

Appliance

Processor

(SIAP

鈩?/div>

)

AT75C1010 鈥?/div>

Telephony

Software

Module

All these algorithms have a number of parameters that can be programmed at run

time. These parameters modify the behavior of the DSP algorithms in such a manner

that they comply with the applicable standards under most situations. They also allow

the AT75C to cope with many non-standard situations often encountered on private

telephone networks.

The AT75C1010 takes advantage of the AT75 mailbox to exchange data with the on-

chip ARM7TDMI

廬

core. The organization of the data communication channel makes it

easy to integrate the AT75C1010 interface into most operating systems.

For developers using uClinux, a specific device driver is supplied. It allows the uClinux

capabilities to be extended to the complete functionality of the AT75C1010 module in

a seamless manner.

This datasheet is made up of three sections:

鈥?/div>

A functional description of the supported algorithms.

A description of the low-level software interface.

A description of the uClinux device driver.

Mixing low-level and driver-level programming should be avoided.

Rev. 1786A鈥?1/01

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