
MOTOROLA
Chapter 36. Digital Signal Processing
36-1
Chapter 36
Digital Signal Processing
360
360
The CPM provides specialized hardware and library functions to support DSP applications.
The CPÕs multiplier/accumulator (MAC) handles real or complex numbers, and the address
generator calculates modulo addressing for circular buffer structures. Library functions
include Þnite impulse response (FIR) Þltering done with or without adaptive equalization,
data compression, and scrambling.
36.1 Features
The following outlines the user interface to the DSP functionality:
¥
ROM microcode library provides basic DSP routines for such applications as
V.32bis and V.34
¥
Data and function parameters formatted by the core using function descriptors (FDs)
¥
DSP routines are core-initiated using CP commands (
INIT
DSP
and
START
DSP
)
¥
Maskable interrupts issued to the core upon completion of DSP routines
The following summarizes the DSP features of the CPM:
¥
16-bit
´
16-bit multiply-and-accumulate (MAC) engine
Ñ Two 40-bit accumulators with overßow saturation logic
Ñ Two 32-bit input registers
Ñ 1 MAC operation per clock (2 clocks latency, 1 clock blockage)
Ñ A single instruction triggers a sequence of one, two or four MACs
Ñ Concurrent operation with other instructions
Ñ Complex (16-bit real, 16-bit imaginary) FIR loop: 4 clocks per 4 multiplies
¥
Load/store instructions with automatic post increment/decrement
Ñ Post increment/decrement by 0, 1, 2, 4
Ñ Modulo addressing and modiÞer for circular buffer support
Summary of Contents for MPC860 PowerQUICC
Page 3: ...MPC860UM AD 07 98 REV 1 MPC860 PowerQUICC ª UserÕs Manual ...
Page 36: ...xxxvi MPC860 PowerQUICC UserÕs Manual MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 78: ...I iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 88: ...1 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 114: ...3 16 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 226: ...8 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 262: ...9 36 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 274: ...III iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 320: ...12 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 325: ...MOTOROLA Part IV Hardware Interface IV v Part IV Hardware Interface ...
Page 326: ...IV vi MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 352: ...13 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 394: ...14 42 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 426: ...15 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 530: ...17 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 632: ...21 44 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 660: ...22 28 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 708: ...24 24 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 748: ...27 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 846: ...31 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 914: ...35 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 948: ...36 34 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 998: ...37 48 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part VI Debug and Test ...
Page 1016: ...A 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1024: ...B 8 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1030: ...C 6 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1086: ...Glossary 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA ...
Page 1106: ......