MOD5272-100IR NetBurner Inc, MOD5272-100IR Datasheet - Page 455

• Manufacturer Part Number: MOD5272-100IR
• Description: PROCESSOR MODULE FLASH MOD5272
• Manufacturer: NetBurner Inc
• Type: Controllers & Processorsr

Specifications of MOD5272-100IR

• Module/board Type: Processor Module
• Ethernet Connection Type: 10/100 Ethernet Port RJ-45
• Operating Voltage: 3.3 V
• Product: Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: MOD5272
• For Use With: 528-1001 - KIT DEVELOP NETWORK FOR MOD5272
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 528-1008

MOTOROLA
Chapter 20
Bus Operation
The MCF5272 bus interface supports synchronous data transfers that can be terminated
synchronously or asynchronously and also can be burst or burst-inhibited between the
MCF5272 and other devices in the system. This chapter describes the functioning of the bus
for data-transfer operations, error conditions, bus arbitration, and reset operations. It
includes detailed timing diagrams showing signal interaction. Refer also to Figure 19-1 for
an overview of how the signals interact with each module of the MCF5272.
Operation of the bus is defined for transfers initiated by the MCF5272 as a bus master. The
MCF5272 does not support external bus masters. The MCF5272 has three on-chip bus
masters—the CPU, the Ethernet controller, and the memory-to-memory DMA controller.
20.1 Features
The following list summarizes the key bus operation features:
20.2 Bus and Control Signals
Table 20-1 summarizes MCF5272 bus signals described in Chapter 19, “Signal
Descriptions.”
• 23 bits of address and 32 bits of data
• Device physical data bus width configurable for 16 or 32 bits
• Accesses 8-, 16-, and 32-bit port sizes
• Generates byte, word, longword, and line size transfers
• Burst and burst-inhibited transfer support
• Internal termination generation
Table 20-1. ColdFire Bus Signal Summary
Signal Name
CS[7:0]
A[22:0]
BS[3:0]
D[31:0]
Chapter 20. Bus Operation
Address bus
Byte strobes
Chip selects
Data bus
Description
I/O
I/O
O
O
O
20-1