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VP-1608F

Part Number	VP-1608F
Manufacturer	Eletech Enterprise
Description	Digital Voice Processor
Published	Feb 6, 2012
Detailed Description	www.DataSheet.co.kr VP-1608F Digital Voice Pr ocessor Processor FEA TURES FEATURES ! Plays messages stored in external ...
Datasheet	VP-1608F PDF File

Overview

www.
DataSheet.
co.
kr VP-1608F Digital Voice Pr ocessor Processor FEA TURES FEATURES ! Plays messages stored in external EPROM chips ! CVSD technique with adjustable sampling rate from 16K to 128K bps for different voice quality ! Dual-channel audio output ! Up to 64 segments per channel ! Built-in RC oscillator or use external clock GENERAL DESCRIPTIONS The VP-1608F is a CMOS voice processor chip based on the CVSD (Continuously Variable Slope Delta) modulation technique.
The VP-1608F is exactly the same as the (now obsolete) VP-1608 except that it is packaged in 64-pin QFP instead of 68-pin PLCC.
Note that although the dual channel output provided by the VP-1608F can be used as a stereo output, it will be hard to do so since the VP-880 Voice Development System does not allow voice digitization in stereo mode.
! ! ! ! Direct EPROM addressing up to 8M bits Low power, single voltage operation Microprocessor interface Low-cost VP-880 system available for quick and easy voice development Therefore the dual channel output is usually used in applications where sound synchronization is not critical.
For example, in a game equipment, channel A can be playing a continuous background sound while channel B plays short sound effects based on the player’s action.
The dual channel output is available on two separate output pins.
They can be used independently, or mixed together externally.
Each channel may control up to 64 sound segments stored in 4 different EPROM banks, with up to 16 segments in each bank.
Each segment stored in the EPROM is represented by a unique binary code: 2 bits for the bank code and 4 bits for the segment code.
A valid code plus a strobe signal are all it takes to activate a certain segment.
The VP-1608F can operate in a wide range of sampling rates (from 16 to 128 Kbps).
A higher sampling rate usually produces better sound quality at the expense of higher memory cost.
As a rule of thumb, start with 32 Kbps.
A 1M EPROM can store 32 seconds of sound at th...

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VP-1608F Digital Voice Processor - Eletech Enterprise

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