GENERAL DESCRIPTION
AK2306 is a dual PCM CODEC-Filter most suitable for ISDN Terminal Adapter.
It includes Selectable A-law/u-law function, Internal Gain Adjustment from +6dB to –18dB by 1dB step control, Selectable 16Hz/20Hz Ring Tone Generator for SLIC. All of these functions are controlled by the internal register accessed through the serial interface.

FEATURE
- Dual PCM CODEC and Filtering systems for ISDN Terminal Adapter
- Selectable Ring Tone Generator for SLIC 16Hz or 20Hz tone is available.
- Independent functions on each channel controlled by the internal register
    - Power Down Mode
    - Mute
    - Gain Adjustment: +6 to -18dB (1dB step)
- Selectable PCM Data Interface Timing: Long Frame / Short Frame/GCI
- Variable PCM Data Rate: 64k x N [Hz] (128k - 4.096MHz)
- OP Amp for External Gain Adjustment
- A-law/u-law Register Selectable
- Serial Interface to access the internal register
- Power on Reset
- Single Power Supply Voltage
    - +5.0V ± 5% (AK2306)
    - +3.3V ± 0.3V (AK2306LV)
- Low Power Consumption