product

ZVRC310 is a digital voice recording and playback processor.

ZVRC310 supports ZARAM’s specific low bit rate voice compression algorithm, ZCELP, and high quality ADPCM.

ZVRC310 also provides voice modulation function.

Using various modulation methods such as filtering, speed and pitch adjustment, the input voice is modulated into totally different voice with special effects on real

time basis. ZVRC310 based on ZARAM’s high performance 16-bit DSP core has an integrated 14-bit Sigma-Delta CODEC.

The features of low power consumption and low voltage operation make ZVRC310 an ideal solution for battery-powered devices.

ZVRC310 also has its own file management system to lighten the burden of MCU.

In case that the application is simple, ZVRC310 can replace the role of MCU on the whole system.

ZVRC310 has embedded 1M bytes Mask-ROM useful for small voice data storage, and external memory interface with EEPROM and NAND flash memory for additional voice data storage.

+ Selectable high quality voice compression algorithm

- ZCELP (4.0/5.4/6.4Kbps @ 8KHz sampling): low bit rate

- ADPCM (24/32/40Kbps @ 8KHz sampling): high quality

+ Selectable sampling rate

-ZCELP : 8/12KHz

-ADPCM : 8/12/16 KHz

+ VOR (Voice On Recording) function

When silence is detected, recording is paused automatically

+ Selectable voice modulation functions

+ Playback speed control (50~200% by 13 steps)

+ Digital volume control (by 64 steps)

+ High quality 14-bit Sigma-Delta Voice CODEC

+ Analog PLL(Input : 1~10MHz, Output : 20~170MHz)

+ Serial/Parallel Host Interface which includes 256 bytes buffer memory

+ Flexible power control by DSP/Host

+ Hardwired NAND flash interface

+ 8/16-bit external data/program memory access

+ 32Kword ROM, 4Kword Data RAM

+ On-chip 1M bytes Mask-ROM for voice data storage

105 second (80Kbps@16KHz) ~ 2097 second (4.0Kbps@8KHz) durations

+ 2.7~5.25 operating voltage

+ Low power consumption

32mA@3.3V, 6.4Kbps recording

20mA@3.3V, 6.4Kbps playback