The 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.
The AK2307/LV is an integrated LSI speech codec intended for PBX/KTS digital key telephones and VoIP devices. It combines PCM encoding/decoding, voice‑path control, microphone amplification, and handset driver functions in a single chip.
The manual covers the block diagram, pin assignments, electrical ratings, serial CPU register interface, selectable PCM data modes, and package dimensions, giving developers the information needed to program the device via its serial interface and configure the desired PCM format.
| Power supply voltage | 5.0V ± 5 % and 3.3V ± 0.3 % |
|---|---|
| Package type | 28‑pin VSOP |
| Package dimensions | 9.8 × 7.6 mm (pin‑to‑pin) |
| Pin pitch | 0.65 mm |
| Ambient operating temperature | -10 °C to 85 °C |
| PCM data interface modes | A/u‑Law, 16‑bit Linear, AK130 B1, AK130 B2 |
The device supports four PCM data interface modes: A/u‑Law PCM, 16‑bit linear PCM, AK130 B1 mode, and AK130 B2 mode.
Registers are read and written via a serial CPU interface using the SCLK, DATA, and CSN pins; each transfer is a 16‑bit word with instruction, address, and data fields.
The absolute maximum rating for VDD is 6.5 V.
Handset microphone inputs are on pins HANDT2 and HANDT3, both defined as analog inputs (AIN).