Analog Devices ADSP-21261 SHARC Hardware Reference Manual page 4

Contents
Processor Core ........................................................................ 1-5
Processing Elements ............................................................ 1-5
Program Sequence Control ................................................. 1-6
Processor Internal Buses ...................................................... 1-9
Processor Peripherals ............................................................. 1-10
Dual-Ported Internal Memory (SRAM) ............................. 1-10
I/O Processor ................................................................... 1-11
Digital Audio Interface (DAI) ........................................... 1-13
Development Tools ..................................................................... 1-13
Differences From Previous SHARCs ............................................ 1-14
Processor Core Enhancements ............................................... 1-15
Processor Internal Bus Changes ............................................. 1-15
Memory Organization Enhancements .................................... 1-16
Parallel Port Enhancements ................................................... 1-16
I/O Architecture Enhancements ............................................ 1-16
Instruction Set Enhancements ............................................... 1-16
PROCESSING ELEMENTS
Numeric Formats .......................................................................... 2-3
IEEE Single-precision Floating-point Data Format ................... 2-4
Extended-precision Floating-Point Format ............................... 2-6
Short Word Floating-Point Format .......................................... 2-7
Packing for Floating-Point Data .............................................. 2-7
Fixed-Point Formats ................................................................ 2-9
iv ADSP-2126x SHARC Processor Hardware Reference