Instruction Set; Typical Applications - Lucent Technologies DSP1617 Information Manual

Information Manual
April 1998
1.1 General Description
1.1.1 Architecture (continued)
Many applications, such as portable cellular terminals, require programmable sleep modes for power management.
There are three different control mechanisms for achieving low-power operation: the powerc control register
STOP pin, and the AWAIT bit in the alf register. The powerc register configures various power-saving modes by
controlling internal clocks and peripheral I/O units. The STOP pin controls the internal processor clock. The
AWAIT bit in the alf register allows the processor to go into a power-saving standby mode until an interrupt occurs.
The external interrupts asynchronously restart the processor from a deep sleep power-saving mode, and program
execution continues without any loss of state. The various power management options are chosen based on
power consumption, wake-up latency, or both requirements.
The DSP1611/17/18/27/28/29 are implemented in low-power CMOS technology and are offered in a variety of
packaging options. For optimal matching to system requirements, several options for low-voltage power supply and
clock speeds are available. See the latest data sheet for the current offerings.

1.1.2 Instruction Set

The DSP1611/17/18/27/28/29 instructions fall into seven categories: multiply/ALU, special function, control, data
move, F3 ALU, BMU, and cache. All instructions are 16 bits wide and have a C-like assembler syntax. Instructions
typically execute in one or sometimes two cycles, and data-path latency effects have been eliminated. Very high
performance is achieved by the use of concurrent instructions in the DAU.

1.2 Typical Applications

The devices in the DSP16XX
including telecommunications, speech processing, image processing, graphics, array processors, robotics, studio
electronics, instrumentation, and military applications. Some of the possible applications follow:
TELECOMMUNICATIONS

Mobile Communications

Modems

PBX

Switches

Transmission
1.XX denotes the last two digits of the device name, e.g., XX = 11 for the DSP1611.
Lucent Technologies Inc.
DSP1611/17/18/27/28/29 DIGITAL SIGNAL PROCESSOR
(continued)
1
family of digital signal processors are used in many different application areas
Speech coding, modulation/demodulation, channel coding/decoding
Echo cancellation, filtering, error correction and detection
Tone detection, tone generation, MF, DTMF
Tone detection, tone generation, line testing
Multipulse LPC, ADPCM, transmultiplexing, encryption, DS0, DS1
DRAFT COPY
Introduction
the
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1-3