ASAHI KASEI [AK2307/LV]
MS0190-E-05 2005/12
1
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