Intel Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an Intel product. No other circuit patent
licenses are implied. Information contained herein supersedes previously published specifications on these devices from Intel.
© INTEL CORPORATION, 1993 November 1993 Order Number: 270727-006
80960CA-33, -25, -16
32-BIT HIGH-PERFORMANCE EMBEDDED PROCESSOR
• Two Instructions/Clock Sustained Execution
• Four 59 Mbytes/s DMA Channels with Data Chaining
• Demultiplexed 32-bit Burst Bus with Pipelining
a73 32-bit Parallel Architecture
— Two Instructions/clock Execution
— Load/Store Architecture
— Sixteen 32-bit Global Registers
— Sixteen 32-bit Local Registers
— Manipulates 64-bit Bit Fields
— 11 Addressing Modes
— Full Parallel Fault Model
— Supervisor Protection Model
a73 Fast Procedure Call/Return Model
— Full Procedure Call in 4 Clocks
a73 On-Chip Register Cache
— Caches Registers on Call/Ret
— Minimum of 6 Frames Provided
— Up to 15 Programmable Frames
a73 On-Chip Instruction Cache
— 1 Kbyte Two-Way Set Associative
— 128-bit Path to Instruction Sequencer
— Cache-Lock Modes
— Cache-Off Mode
a73 High Bandwidth On-Chip Data RAM
— 1 Kbyte On-Chip Data RAM
— Sustains 128 bits per Clock Access
a73 Four On-Chip DMA Channels
— 59 Mbytes/s Fly-by Transfers
— 32 Mbytes/s Two-Cycle Transfers
— Data Chaining
— Data Packing/Unpacking
— Programmable Priority Method
a73 32-Bit Demultiplexed Burst Bus
— 128-bit Internal Data Paths to and
from Registers
— Burst Bus for DRAM Interfacing
— Address Pipelining Option
— Fully Programmable Wait States
— Supports 8-, 16- or 32-bit Bus Widths
— Supports Unaligned Accesses
— Supervisor Protection Pin
a73 Selectable Big or Little Endian Byte
Ordering
a73 High-Speed Interrupt Controller
— Up to 248 External Interrupts
— 32 Fully Programmable Priorities
— Multi-mode 8-bit Interrupt Port
— Four Internal DMA Interrupts
— Separate, Non-maskable Interrupt Pin
— Context Switch in 750 ns Typical