mc68ec060 Freescale Semiconductor, Inc, mc68ec060 Datasheet - Page 29

• Manufacturer Part Number: mc68ec060
• Description: Mc68060 Superscalar 68k Microprocessor Including The Lc060 And Ec060
• Manufacturer: Freescale Semiconductor, Inc

Architectural highlights of the MC68060 include:
This pipeline architecture supports extremely high data transfer rates within the MC68060
processor. The on-chip instruction and operand data caches provide 600 MBytes/sec @ 50
MHz to the pipelines, while the integer execute engines can support sustained transfer rates
of 1.2 GBytes/sec.
1.4 PROCESSOR OVERVIEW
The following paragraphs provide a general description of the MC68060.
1.4.1 Functional Blocks
Figure 1-1 illustrates a simplified block diagram of the MC68060.
MOTOROLA
• Four-Stage Instruction Fetch Unit (IFU)
• Four-Stage Execution Pipelines Featuring Primary Pipeline (pOEP), Secondary Pipe-
— 64-Entry Instruction Address Translation Cache (ATC), Organized as 4-Way Set-
— 8- Kbyte, 4-Way Set-Associative, Physically-Mapped Instruction Cache
—256-Entry, 4-Way Set-Associative, Virtually-Mapped Branch Cache, Which Predicts
—96-Byte FIFO Instruction Buffer to Allow Decoupling of the IFP and OEPs
line (sOEP), and Register File (RGF) Containing Program-Visible General Registers
— 64-Entry Operand Data ATC, Organized as 4-Way Set-Associative, for Fast Virtual-
— 8- Kbyte, 4-Way Set-Associative, Physically-Mapped Operand Data Cache
— The Operand Data Cache Is Organized in a Banked Structure to Allow Simultaneous
— Integer Execute Engines Optimized to Perform Most Instruction Executions in a
—Floating-Point Execute Engine, with Floating-Point Register File, Optimized for Per-
—Four-Entry Store Buffer and One-Entry Push Buffer That Provide the Performance
Associative, for Fast Virtual-to-Physical Address Translations
the Direction of Branches Based on Their Past Execution History
to-Physical Address Translations
Read/Write Accesses
Single Machine Cycle
formance with Extended-Precision-Wide Internal Datapaths.
Feature of Decoupling the Processor Pipeline from External Memory for Certain
Cache Modes of Operation.
M68060 USER’S MANUAL
Introduction
1-5