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1.1
OVERVIEW ..........................................................................................................1-1
1.2
ADSP-21000 FAMILY FEATURES & BENEFITS ................................................1-5
1.2.1
System-Level Enhancements ..........................................................................1-6
1.2.2
Why Floating-Point DSP? ................................................................................1-7
1.3
ADSP-2106X ARCHITECTURE ...........................................................................1-8
1.3.1
Core Processor ................................................................................................1-8
1.3.1.1
Computation Units .......................................................................................1-8
1.3.1.2
Data Register File ........................................................................................1-8
1.3.1.3
Program Sequencer & Data Address Generators .......................................1-9
1.3.1.4
Instruction Cache .......................................................................................1-10
1.3.1.5
Interrupts....................................................................................................1-10
1.3.1.6
Timer..........................................................................................................1-10
1.3.1.7
Core Processor Buses ...............................................................................1-10
1.3.1.8
Internal Data Transfers ..............................................................................1-11
1.3.1.9
Context Switching ......................................................................................1-11
1.3.1.10
Instruction Set ............................................................................................1-12
1.3.2
Dual-Ported Internal Memory .........................................................................1-12
1.3.3
External Memory & Peripherals Interface ......................................................1-13
1.3.4
Host Processor Interface ...............................................................................1-13
1.3.5
Multiprocessing ..............................................................................................1-14
1.3.6
I/O Processor .................................................................................................1-14
1.3.6.1
1.3.6.2
Link Ports ...................................................................................................1-15
1.3.6.3
DMA Controller ..........................................................................................1-15
1.3.6.4
Booting.......................................................................................................1-16
1.4
DEVELOPMENT TOOLS ...................................................................................1-16
1.5
MESH MULTIPROCESSING .............................................................................1-18
1.6
ADDITIONAL LITERATURE ..............................................................................1-18
CHAPTER 2
2.1
OVERVIEW ..........................................................................................................2-1
2.2
IEEE FLOATING-POINT OPERATIONS .............................................................2-2
2.2.1
Extended Floating-Point Precision ...................................................................2-3
2.2.2
Short Word Floating-Point Format ...................................................................2-3
2.2.3
Floating-Point Exceptions ................................................................................2-4
2.3
FIXED-POINT OPERATIONS ..............................................................................2-4
2.4
ROUNDING ..........................................................................................................2-4
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