s a members of the CML DuraTALK family of digital voice products, the CMX618/CMX638 are flexible, high integration, high performance, RALCWI Vocoder, offering near toll-quality voice at very low bit rates.
Half-duplex RALCWI Vocoder with Integrated Voice Codec
Full-duplex RALCWI Vocoder with Integrated Voice Codec
A Forward Error Correction (FEC) engine provides optimum performance in real life applications.
The RALCWI Vocoder comprises four independent functions which are selectable by the host: Voice Encoder, FEC Encoder, Voice Decoder and FEC Decoder.
The CMX618 includes an integrated voice CODEC, offering a complete analogue voice to low bit rate vocoded data function, with integrated channel filters, which removes the need for external components.
Both devices operate from a dual power supply (1.8V and 3.3V) and are available in both 48-pin LQFP (L4) and 48-pin VQFN (Q3) packages.
Function Add-ins
New features or enhancements to aid Vocoder operation are available. Function Add-ins currently available:
Voice Store and Retrieve (VSR)
Noise Gate
Encryption
Fine Analogue Output Gain Option
RALCWI™ CML’s Digital Voice Technology
Near Toll Quality RALCWI™ Coding Algorithm
No royalty/license fee
Multiple Bit-Rate Modes