Datasheet > D6351A-11

D6351A-11

更新时间： 2024-09-11 23:46:07

品牌	Logo	应用领域
其他 - ETC		电信
页数	文件大小	规格书
4页	448K
描述
Telecommunication IC

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D6351A-11 数据手册

D6351A

Flash TAD Chip for an all Digital Telephone Answering Device

with True FULL Duplex SpeakerPhone

General Description

The D6351A chip is a digital speech/signal processing subsystem that implements all functions of TRUESPEECH

speech compression and voice prompts, telephone line signal processing, flash memory management, and True FULL

Duplex SpeakerPhone for an all digital answering machine. The D6351A is fully controlled by the system Host

through a simple interface protocol. The Host controller provides activation and control of all system functions such as

speech recording and playback, DTMF and call progress tone detection, DTMF and tone generation, and voice

prompting.

Host

Controller

Telephone

Phone

Line

Interface

CODEC

Voice

Prompt

ROM

D6351A

DSP Speech

Processor

Speaker

Phone

Interface

CODEC

Flash

Memory

Optional

Figure 1. D6351A System Block Diagram

Key Features

n High-quality, variable low rate TRUESPEECH digital n Works with 4Mb or 16Mb Flash Memory Devices:

speech compression allowing 13-15 minutes of

recording time per each 4 Mbit Flash Memory

Samsung KM29N040*, KM29N1600T** and

KM29N16TS

n Flexible storage of incoming messages (ICM) and

outgoing messages (OGM), supporting multiple

OGMs and multiple mailboxes

n True FULL Duplex SpeakerPhone with both

acoustical and near-end echo cancellation

n Programmable thresholds for VOX, DTMF, and

Call Progress

n TRUESPEECH natural-sound voice prompting for

Day/Time stamp and voice instructions

n Supports offset playback for jumps within a

message

n DTMF generation and detection with near-end

echo cancellation for superior performance

n FLEXISPEECH variable speed, natural sound

playback (50%-200%)

n Easy Host software conversion from the D6305B

n Simple 8-bit Host Interface

n Low Power Consumption

n Digital volume control

*May have up to 3 bad sectors

**May have up to 10 bad sectors

12 3 4

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