ADSP-2187LBSTZ-210 Analog Devices 16bit DSP

ADSP-2187LBSTZ-210 Overview

The ADSP-2187L is a single-chip, 3.3V microcomputer optimized for digital signal processing (DSP)and other high speed numeric processing applications.

The ADSP-2187L combines the ADSP-21xx family base architecture (three computational units, dataaddress generators and a program sequencer) with two high-speed serial ports, a 16-bit internal DMA port,a byte DMA port, a programmable timer, Flag I/O, extensive interrupt capabilities, and on-chipprogram and data memory.

The ADSP-2187L integrates 160K bytes of on-chip memory configured as 32Kx24 of Program RAM and 32Kx16 of data RAM. Five power-down modes are also provided to meetthe needs of battery operated portable equipment.

In addition, the ADSP-2187L supports instructions new to the 218x family which include bitmanipulation (bit set, bit clear, bit toggle, bit test) new ALU constants, a new multiplication instruction(x squared), biased rounding, result free ALU operations, I/O memory transfers, and global interrupt masking, forincreased flexibility.

Fabricated in an 0.35 micron process, the ADSP-2187L operates with a 19 ns instruction cycle time. Everyinstruction executes in a single cycle; in addition, multiple operations can be performed in parallel.

In one processor cycle all members of the 21xx family can:

Perform an arithmetic computation

Perform a data read from Data Memory

Perform a data read from Program Memory

Update a memory pointer

Update another memory pointer

Check a circular buffer boundary

Generate the next program address

Fetch the next instruction

The ADSP-2187L is available in a 100-pin LQFP package and is pin compatible with previousmembers of the 218x family.

Features

19 ns Instruction Cycle Time @ 3.3 Volts, 52 MIPS Sustained Performance
ADSP-2100 Family Code Compatible, with Instruction Set Extensions
160K Bytes of On-Chip RAM, Configured as 32K Words Program Memory RAM and 32K Words Data Memory RAM
Dual Purpose Program Memory for InstructionÊ and Data Storage

Single-Cycle Instruction Execution
16-Bit Internal DMA Port for High Speed Access to On-Chip Memory (Mode Selectable)
4 MByte Memory Interface for Storage of Data Tables and Program Overlays (Mode Selectable)
8-Bit DMA to Byte Memory for Transparent Program and Data Memory Transfers (Mode Selectable)