Block Diagram - Freescale Semiconductor MCF54455 Reference Manual

1.2

Block Diagram

Figure 1-1 shows a top-level block diagram of the MCF54455 superset device.
16K
Instruction
Cache
16K
Data
EMAC
Cache
Hardware
32K
Divide
SRAM
Peripheral Bridge
DSPI
SSI
EPORT
4 PITs
ATA – Advanced Technology Attachment Controller
BDM – Background debug module
CAU – Cryptography acceleration unit
DSPI – DMA serial peripheral interface
eDMA – Enhanced direct memory access
EMAC – Enchance multiply-accumulate unit
EPORT – Edge port module
FEC – Fast Ethernet controller
GPIO – General Purpose Input/Output
2
I C – Inter-Intergrated Circuit
Freescale Semiconductor
MCF54455
Version 4 ColdFire Core
BDM
CAU MMU
Crossbar Switch (XBS)
2
I C RTC
RNG GPIO
Watchdog 2 INTCs
4 DMA
3 UARTs
Timers
LEGEND
Figure 1-1. MCF54455 Block Diagram
JTAG Oscillator
2 FECs
eDMA PCI
SDRAM
ATA
Controller
INTC – Interrupt controller
JTAG – Joint Test Action Group interface
MMU – Memory management unit
PCI – Peripheral Component Interconnect
PIT – Programmable interrupt timers
PLL – Phase locked loop module
RNG – Random Number Generator
RTC – Real time clock
SSI – Synchronous Serial Interface
USB OTG – Universal Serial Bus On-the-Go controller
Overview
PLL
USB OTG
Serial Boot
FlexBus
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