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Section 6 Bus Controller (BSC)
Rev. 3.00 Mar. 14, 2006 Page 127 of 804
REJ09B0104-0300
6.3 Bus
Configuration
Figure 6.2 shows the internal bus configuration of this LSI. The internal bus of this LSI consists of
the following two types.
•
Internal system bus 1
A bus that connects the CPU, DMAC, on-chip ROM, on-chip RAM, and internal peripheral
bus.
•
Internal peripheral bus
A bus that accesses registers in the DMAC, bus controller and interrupt controller and registers
of peripheral modules such as SCI and timer.
CPU
P
φ
synchronization
I
φ
synchronization
Bus controller,
interrupt controller,
power-down controller
Peripheral
functions
On-chip
RAM
Internal system bus 1
Internal peripheral bus
Write data
buffer
On-chip
ROM
DMAC
Figure 6.2 Internal Bus Configuration
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