r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 95

Manufacturer Part Number

r8a77850anbg

Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family

Manufacturer

Renesas Electronics Corporation.

Manufacturer

BOSTOCK HK LIMITED

Part Number:

r8a77850anbgV

Manufacturer:

Renesas Electronics America

This LSI is a 2-ILP (instruction-level-parallelism) superscalar pipelining microprocessor.

Instruction execution is pipelined, and two instructions can be executed in parallel.

Figure 4.1 shows the basic pipelines. Normally, a pipeline consists of eight stages: instruction

fetch (I1/I2/I3), decode and register read (ID), execution (E1/E2/E3), and write-back (WB). An

instruction is executed as a combination of basic pipelines.

1. General Pipeline

2. General Load/Store Pipeline

3. Special Pipeline

4. Special Load/Store Pipeline

5. Floating-Point Pipeline

Instruction fetch

Floating-Point Extended Pipeline

Instruction fetch

Section 4 Pipelining

-Instruction

Figure 4.1 Basic Pipelines

-Register read

Memory data access

Rev.1.00 Jan. 10, 2008 Page 65 of 1658

REJ09B0261-0100

4. Pipelining