Nexus
MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 25-27
NOTE
Throughout this section references are made to the auxiliary port and its
specific signals, such as MCKO, MSEO[0:1], MDO[11:0] and others. The
device NPC module arbitrates the access of the single auxiliary port. To
simplify the description of the function of the NZ6C3 module, the
interaction of the NPC is omitted and the configuration in this chapter
describes an NPC with a dedicated auxiliary port. The auxiliary port is fully
described in Section 25.2, “External Signal Description.”
25.10.2 Block Diagram
Figure 25-13. e200z6 Nexus3 Functional Block Diagram
Message
Queues
NPC
Control and
I/O Logic
Memory Control
Control/Status
Registers
Registers
DMA Registers
DMA
(R/W)
Arbitration
Data
Snoop
Instruction
Snoop
n +1
MDO[n:0]
MSEO
[0]
MSEO
[1]
MCKO
EVTO
EVTI
RDY
TDI
TDO
TMS
TCLK
TRST
Breakpoint/
Watchpoint
Control
OnCE Debug
Nexus3 Module
Nexus1 Module (within core CPU)
Core CPU Virtual Bus
System Bus
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