ISD2564P

Interface - Voice Record and Playback

The ISD2560P is a voice record and playback product from ISD Corporation, which offers applications for many sectors including consumer electronics and telecom. Its integrated voice record and playback solution offers users high-speed, single-cycle operation. The ISD2560P supports sampling rates of up to for kHz, with a maximum storage capacity of 1.6 seconds of speech data.

Practical Applications

The ISD2560P is ideal for a range of applications. It can be used for storing and playing back pre-recorded instructions, such as in digital test equipment, educational toys, home automation systems and exercise equipment. Plus, cellular and messaging systems can be enhanced with voice prompts, messages and ringtones. Then there are applications like telephone and voice message systems, where the ISD2560P can store messages, voice prompts and personalised notifications.

Product Features

The major features of the ISD2560P include a large degree of flexibility and onboard functions, as well as digital filters. It is designed with a microphone input to capture speech and other sounds, as well as an input for recording from an external source. It provides an integrated amplifier, ensuring it is ready to be used as soon as it is connected via an I²S bus. Its built-in memory is a non-volatile, serial EEPROM. It also includes a high-impedance microphone power supply and supports a wide range of on-chip analog and digital signal processing algorithms.

Working Principle

The ISD2560P has an integral microphone interface, which captures the signal from the microphone, as well as other sounds. It is then digitised and encoded using an on-chip 8-bit A/D converter before being stored in the integrated non-volatile serial EEPROM. To play back the signal, the processor reads the data from the memory, decodes the signal, and uses an amplifyer to drive the speaker. The ISD2560P also provides an input for playing back an external signal, which also passes through the 8-bit A/D converter and then through the same playback process as an internal signal.

Conclusion

The ISD2560P is a powerful voice record and playback chip, ideal for, but not limited to a range of audio applications. Its integrated microphone interface and non-volatile serial EEPROM ensure efficient and accurate capture of sound, as well as fast playback. It provides users with a single-cycle operation and can be used for many tasks, from storing and playing back pre-recorded instructions, to enhancing cellular and messaging systems.