ASAHI KASEI [AK2306/LV]
MS0093-E-04 1 2001/11
AK2306/2306LV
Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER



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.

PCM interface of AK2306 accepts Long Frame, Short
Frame clock formats and GCI format. 64 x N
kHz(128k-4096kHz) clock input is available for PCM
interface.

AK2306 and AK2306LV are pin-compatible, but
different products which power supply voltage are 5.0V
and 3.3V,respectively.
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


PACKAGE

- 24pinVSOP
7.9 x 7.6 mm (0.5mm pin pitch)