Data Path - Fujitsu FR60 Hardware Manual

16.5

Data Path

This section shows the flow of data during different types of transfer operation.
■ Flow of Data During 2-Cycle Transfer
Figure 16.5-1 to Figure 16.5-6 show the flow of data during 2-cycle transfer.
MB91xxx
Read cycle
I-bus
D-bus
MB91xxx
Read cycle
I-bus
D-bus
Figure 16.5-1 External Area → External Area Transfer
External area => external area transfer
DMAC
X-bus
Bus controller
Data buffer
F-bus
RAM I/O
Figure 16.5-2 External Area → Internal RAM Area Transfer
External area => internal RAM area transfer
DMAC
X-bus
Bus controller
Data buffer
F-bus
RAM I/O
MB91xxx
DMAC
Write cycle
I-bus
Bus controller
D-bus Data buffer
F-bus
RAM
MB91xxx
DMAC
Write cycle
I-bus
Bus controller
D-bus Data buffer
F-bus
RAM
X-bus
I/O
X-bus
I/O
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