Baseband Processors for Analog Cellular

Handsets
  Digital Baseband
  Analog Baseband
  Radio Frequency
  Power Management

Baseband Interface
VBAP
Signal Conditioning
Analog Cellular

Baseband Processors
for analog Cellular
TMS320C5X/LC5X
TCM8002/TCM8010

Cellular Terms

Digital Signal Processing

Baseband Processors for Analog Cellular

TCM8030 Baseband Processor for Analog Cellular Telephones

In the mature analog cellular market, TI's TCM8030 Baseband Processor for Analog Cellular Telephones is designed to help you maintain your competitive edge. This flexible, single-chip solution enables you to design analog and dual-mode analog and digital cellular phones that consume less power and can be priced competitively for end users. Because the TCM8030 is a complete solution, it handles all the audio and data processing required to support the full range of worldwide analog cellular standards, including the Advanced Mobile Phone System (AMPS), Total Access Communications System (TACS), Narrowband AMPS (NAMPS) and Narrowband TACS (NTACS).

TCM8030: the low-power solution

Power conrol modes extend talk and standby time

Total power-down provices system power-up/down routine

Shut-down allows use of I/Os for battery charging

Idle uses minimum power with MCU asleep and minimal receiver duty cycle

Tone enables DTMF and receive audio path

Full-operation DTMF OFF for conversation

Full-operation DTMF ON - all circuites in operation

A complete analog baseband solution

The TCM8030 uses a low-power mixed-signal CMOS process to integrate an entire analog baseband subsystem into a single 2.7 V to 5.5 V device. The completeness of the implementation gives you considerable design flexibility. With a simple, inexpensive microcontrol unit (MCU), you can design a low-cost, entry-level system, or you can add features in the MCU software and memory to create highly differentiated phones. And the TCM8030 helps keep design straightforward, since even in the most complex wireless handsets, the processor communicates with a wide range of MCUs through a simple, four-wire serial interface.

Low power consumption

The TCM8030 minimizes power consumption, extending talk and standby times, as well as giving you the option of designing your system to use smaller, lighter-weight batteries. The processor employs a variety of power-saving modes that allow the system to turn off most sections of the phone -- and of the device itself -- when they are not in use. For example, the TCM8030 monitors base station messages during idle modes, allowing the MCU to sleep while waiting for incoming calls.

Reduced component counts

A variety of on-chip functions reduce system component counts and expense. Among these functions are:

supervisory audio tone (SAT) detector and transponder
dual-tone multifrequency (DTMF) generator
8-bit programmable counter/timer
independent watchdog timer
three 8-bit digital-to-analog converters (DACs) two 8-bit programmable expansion I/O ports

The DACs are suitable for on-chip automatic frequency control (AFC) circuits and other voltage-controlled trims. Narrowband standards can be implemented with a minimum of external components using an on-chip AFC circuit, and with on-chip processing of the digital supervisory audio tone (DSAT) and digital signaling tone (DST).

Low-profile packaging

To help you create smaller, more mobile systems, the TCM8030 comes packaged in an 80-pin thin quad flatpack (TQFP) that requires only 1.4 mm in vertical space.