Z87000 Datasheet, PDF (2/50 Pages) Zilog, Inc. – Spread Spectrum Controllers

Z87000/Z87L00
Spread Spectrum Controllers
GENERAL DESCRIPTION (Continued)
Additional on-chip transceiver circuitry supports Frequen-
cy Shift Keying modulation/demodulation and multiplex-
ing/demultiplexing of the 32 kbps voice data and 4 kbps
command data between handset and base station. The
Z87000 provides thirty-two I/O pins, including four wake-
up inputs and two CPU interrupt inputs. These program-
mable I/O pins allow a variety of user-determined phone
features and board layout configurations. Additionally, the
pins may be used so that phone features and interfaces
Zilog
are supported by an optional microcontroller rather than by
the Z87000’s DSP core.
In combination with an RF section designed according to
the system specifications, Zilog’s Z87010/Z87L10 ADPCM
Processor, a standard 8-bit PCM telephone CODEC and
minimal additional phone circuity, the Z87000 and its em-
bedded software provide a total system solution.
CODEC
Telephone
Line
Interface
Z87010
ADPCM
Processor
Z87000
Spread
Spectrum
Controller
RF Section
Base Station
RF Section
Z87000
Spread
Spectrum
Controller
Z87010
ADPCM
Processor
CODEC
Handset
Figure 1. System Block Diagram of a Z87000/Z87010 Based Phone
1-2
PRELIMINARY
DS96WRL0501