24-bit General Embedded DSP | NXP Semiconductors

Overview

The DSP56303 is intended for use in telecommunication applications, such as multi-line voice/data/fax processing, videoconferencing, audio applications, control, and general digital signal processing.

The DSP56303 is a member of the DSP56300 core family of programmable CMOS Digital Signal Processors (DSPs). This family uses a high performance, single clock cycle per instruction engine providing a twofold performance increase over Our popular DSP56000 core family, while retaining code compatibility. Significant architectural enhancements to the DSP56300 core family include a barrel shifter, 24-bit addressing, instruction cache, and DMA. The DSP56303 offers 100 MMACS using an internal 100 MHz clock at 3.0-3.6 volts. The DSP56300 core family offers a new level of performance in speed and power provided by its rich instruction set and low power dissipation, enabling a new generation of wireless, telecommunications, and multimedia products.

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Features

High performance DSP56300 core

100 million multiply-accumulates per second (MMACS) with a 100 MHz clock
Object code compatible with the DSP56000 core
Highly parallel instruction set
Fully pipelined 24 x 24-bit parallel multiplier-accumulator (MAC)
56-bit parallel barrel shifter
24-bit or 16-bit arithmetic support under software control
Position-independent code support
Addressing modes optimized for DSP applications
On-chip instruction cache controller
On-chip memory-expandable hardware stack
Nested hardware DO loops
Fast auto-return interrupts
On-chip concurrent six-channel DMA controller
On-chip phase-lock loop (PLL) and clock generator
On-chip emulation (OnCE) module
JTAG test access port (TAP)
Address Tracing mode reflects internal accesses at the external port

On-chip memories

Program RAM, instruction cache, X data RAM, and Y data RAM size is programmable:

Program RAM Size	Instruction Cache Size	X Data RAM Size	Y Data Ram Size
4096 x 24-bit	0	2048 x 24-bit	2048 x 24-bit
3072 x 24-bit	1024 x 24-bit	2048 x 24-bit	2048 x 24-bit
2048 x 24-bit	0	3072 x 24-bit	3072 x 24-bit
1024 x 24-bit	1024 x 24-bit	3072 x 24-bit	3072 x 24-bit

192 x 24-bit bootstrap ROM

Off-chip memory expansion

Data memory expansion to two 256 K x 24-bit word memory spaces
Program memory expansion to one 256 K x 24-bit word memory space
External memory expansion port
Chip select logic requires no additional circuitry to interface to SRAMs and SSRAMs
On-chip DRAM controller requires no additional circuitry to interface to DRAMs

On-chip peripherals

8-bit parallel host interface (HI08), ISA-compatible bus interface, providing a cost-effective solution for applications not requiring the PCI bus
Two enhanced synchronous serial interfaces (ESSI)
Serial communications interface (SCI) with baud rate generator
Triple timer module
Up to thirty-four programmable general-purpose I/O pins (GPIO), depending on which peripherals are enabled

Reduced power dissipation

Very low power CMOS design
Wait and Stop low power standby modes
Fully-static logic, operation frequency down to DC
Optimized power management circuitry