Chapter 9 Bus Control Unit (Bcu); Description - NEC V850ES/F 3-L Series User Manual

Chapter 9 Bus Control Unit (BCU)

The Bus Control Unit BCU controls the access to on-chip peripheral I/Os.

9.1 Description

The figure below shows a block diagram of the modules that are necessary for
accessing the on-chip peripherals.
CPU
VFB
VDB
Figure 9-1 Bus and Memory Control block diagram
Busses The busses are abbreviated as follows:
• NPB: NEC peripheral bus
• VSB: V850 system bus
• VDB: V850 data bus
• VFB: V850 fetch bus
BCU The Bus Control Unit (BCU) controls the access to the on-chip peripherals.
.
Preliminary User's Manual U18743EE1V2UM00
Bus
Control
VSB
Unit
Bus
Bridge
Internal Bus (NPB)
On-chip Peripheral I/O
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