GENERAL DESCRIPTION
The Z87010/Z87L10 is a second generation CMOS Digital Signal Processor (DSP) that has been ROM-coded by Zilog to provide full-duplex 32 Kbps, Adaptive Delta Pulse Code Modulation (ADPCM) speech coding/decoding (CODEC), and interface to the Z87000/Z87L00 Spread Spectrum Cordless Telephone Controller. Together the Z87000/Z87L00 and Z87010/Z87L10 devices support the implementation of a 900 MHz frequency-hopping spread spectrum cordless telephone in conformance with United States FCC regulations for unlicensed operation.

FEATURES
Hardware
■ 16-Bit DSP Processor
■ 3.0V to 3.6V; -20° to +70°C, Z87L10
   4.5V to 5.5V, -20° to +70°C, Z87010
■ Static Architecture
■ 512 Word On-Chip RAM
■ Modified Harvard Architecture
■ Direct Interface to Z87000 Frequency Hopping Spreader/Despreader
■ Direct Interface to 8-Bit µ-law Telephone CODEC
■ I/O Bus (16-Bit Tristable Data, 3-Bit Address)
■ Wait State Generator
■ Two External Interrupts
■ Four Separate I/O Pins (2 Input, 2 Output)

Software
■ Full Duplex 32 Kbps ADPCM Encoding/Decoding
■ Single Tone and DTMF Signal Generation
■ Sidetone, Volume Control, Mute Functions
■ Large Phone Number Memory (21 numbers of 23 digits each)
■ Master-Slave Protocol Interface to Z87000 Spreader/- Despreader