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AK2307LV

SPEECH CODEC for Digital Key telephone (5.0V/3.3V)

Asahi Kasei Microdevices 

ASAHI KASEI

[AK2307/LV]

AK2307/LV

SPEECH CODEC for Digital Key telephone (5.0V/3.3V)

GENERAL DISCREPTION

AK2307/LV is an integrated LSI with PCM CODEC,

Voice path control, MIC amplifier and Handset driver

suitable for PBX/KTS digital key telephone, VoIP

Telephone.

PCM CODEC is compliant to ITU specification, very

low noise, and low power dissipation CODEC. A-law

and u-law selectable through Serial I/F register.

PCM I/F provides Long/Short frame format and GCI.

The output is 8bit compressed data along with 16bit

linear format.

Voice path block consists of Tone generator, Volume

for both TX and RX, Analog inputs, outputs for

Handset speaker and the speaker for hands-free

conversation, and the path control switch.

Side tone can be added internally and its volume

is controlled through serial I/F.

FEATURES

- 2 MIC AMP for the handset and microphone are

integrated.

- A 150 ohm handset driver and an extra 150 ohm

driver for a headset receiver are provided.

- Path control and volume control via serial CPU

I/F

- programmable tone generator

- 5.0V+/-5%, 3.3V+/-0.3V single power supply

- Low noise, low power consumption

Package

28pin VSOP package

- Package size; 9.8*7.6mm(pin to pin)

- Pin pitch;

0.65mm

MS0190-E-05

1

2005/12

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