Description

The AK2306 is a 2-channel PCM codec LSI designed for ISDN / VoIP terminal adapters. It is suitable for ISDN terminal adapters and supports the A-Law companding standard used in Europe, as well as the companding standards used in North America and Japan. The codec has built-in features such as a PCM codec/filter, a ringer tone generator, and functions that can be set for each channel.

Specifications and features

- Built-in 2-channel PCM codec / filter

- Built-in RINGER TONE generator (16Hz / 20Hz)

- Functions that can be set for each channel:

• Power down (register setting)
• Mute (register setting)
• Gain adjustment + 6 to -18 dB (register setting 1.0 dB step)

- PCM data interface supports LongFrame / ShortFrame / GCI

- PCM data transfer rate configurable at N times frequency of 64 kHz (128k-4.096 MHz)

- Built-in operational amplifier for input/output gain adjustment

- A-law, μ-law companding selection function (register setting)

- Serial interface

- Built-in power-on reset

- +5 V ± 5% single power supply (AK2306)

- +3.3 ± 0.3 V single power supply (AK2306 LV)

- Low power consumption

- Small package

Application Scenarios

The AK2306 is commonly used in ISDN and VoIP terminal adapters, specifically in ISDN terminal adapters. It is designed to support multiple companding standards used in different regions such as Europe, North America, and Japan. The codec's features make it suitable for various telephony applications that require PCM codec capabilities and ringer tone generation.

Comparison

- Supports multiple companding standards

- Built-in functions for each channel

- Flexible PCM data interface and transfer rate

- Low power consumption

- Limited to ISDN and VoIP terminal adapter applications

- Small package size may pose challenges for certain designs