TCM8002_08 Datasheet, PDF (1/25 Pages) Texas Instruments – DATA PROCESSOR FOR CELLULAR TELEPHONE

TCM8002
DATA PROCESSOR FOR CELLULAR TELEPHONE
D Single Chip for AMPS/TACS Data and SAT
Processing
D 3.3-V or 5-V Operation
D Simple Serial Interface
D User-Configurable Interrupt Structure
D TX and RX Data Buffers
SLWS008C − SEPTEMBER 1994 − REVISED JUNE 1996
D Programmable Timer
D Independent Watchdog Timer
D RX/TX Automatic Mute Functions
D Arbitration Processing
D 20 Programmable Expansion I/O Ports
D 44-Pin Mini-QFP FR Package
description
The TCM8002 provides the data transceiving, data processing, and SAT (supervisory audio tone) functions for
the AMPS (advanced mobile phone service) and TACS (total access communications system) cellular
telephone standards. A highly integrated device, the TCM8002 includes a number of additional functions that
are helpful in the implementation of the typical cellular telephone. These extra functions include a watchdog
timer, which is normally external to the telephone microcontroller, and two 8-bit- and one 4-bit-wide
user-programmable general-purpose input/output ports. These can be used to provide port expansion for the
microcontroller. An 8-bit counter/timer for user-defined purposes is also included.
To facilitate the application of the TCM8002 and to minimize the number of connections, a single serial interface
to the microcontroller is used for controlling, receiving, and transmitting data. There is also a dedicated interface,
including a compatible clock signal, to the companion TCM8010 audio processor that performs most of the
audio processing required in a cellular telephone. Additional outputs are also provided for interfacing to other
audio processors.
The TCM8002 is built using a low-power CMOS process and operates with a 5-V or 3.3-V power supply. When
used in conjunction with the TCM8010, a unique and very compact low-power solution for AMPS/TACS
baseband processing in 5-V and 3-V systems is realized.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  1996, Texas Instruments Incorporated
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• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
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