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AK2306

Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER

Asahi Kasei Microdevices 

ASAHI KASEI

[AK2306/LV]

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)

MS0093-E-04

1

2001/11

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