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GP521

Gennum Corporation
Part Number GP521
Manufacturer Gennum Corporation
Description General Purpose Controller / Memory Chip
Published Feb 26, 2007
Detailed Description www.DataSheet4U.com General Purpose Controller / Memory Chip for Hearing Instruments GP521 - DATA SHEET FEATURES • gene...
Datasheet PDF File GP521 PDF File

GP521
GP521

Overview
www.
DataSheet4U.
com General Purpose Controller / Memory Chip for Hearing Instruments GP521 - DATA SHEET FEATURES • general purpose • EEPROM non-volatile memory • 8 programmable current sink (PCS) control outputs • can be configured with 6 PCS outputs for hearing instruments (two switchable, four non-switchable) • status register • data transmission error detection • synchronization of GP521 internal clocks with program unit clock STANDARD PACKAGING • Chip (129 x 112 mils) Au Bump DESCRIPTION The GP521 is a general purpose controller/memory chip intended for use with audio signal path circuits in programmable hearing instruments.
The GP521 uses a flexible communication standard which allows room for future growth in programmable functions for hearing instruments.
The communication with the program unit is over a bi-directional serial data link.
Error detection circuitry is used to avoid undesired changes in programmed settings.
The GP521 controls the audio signal path circuit using eight Programmable Current Sinks (PCS).
Each PCS has 16 programmable settings.
The circuit can be configured for either 6 or 8 PCS outputs.
When used with a single pole single throw switch (SPST) under the 6 PCS configuration , it is possible to design a hearing instrument with two programmed settings (i.
e.
adjusting a low cut filter for either noisy or quiet background environments).
The 8 output configuration may be used for circuits that require more programmable but nonswitchable settings.
An external reference current is used for the PCS’s so that the PCS outputs can track with the currents in the audio signal path circuit.
An information transfer dialogue consists of the address and data for a register sent to the GP521 and the register contents returned by the GP521.
The function controlled by an output of the GP521 is defined by the signal path circuit allowing current controlled parameters.
The relationship between the GP521 register addresses and the function on the signal path ...


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