NXP Semiconductors MPC5566 - Introduction

MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 7-1
Chapter 7
Crossbar Switch (XBAR)
7.1 Introduction
This chapter describes the multi-port crossbar switch (XBAR), which supports simultaneous connections
between master ports and five slave ports. XBAR supports a 32-bit address bus width and a 64-bit data bus
width at all master and slave ports.
7.1.1 Block Diagram
Figure 7-1 shows a block diagram of the crossbar switch.
Figure 7-1. XBAR Block Diagram
Table 7-1 gives the crossbar switch port for each master and slave, and the assigned and fixed ID number
for each master. The following table shows the master ID numbers as they relate to the master port
numbers:
Table 7-1. XBAR Switch Ports
Module
Port
Master ID
Type Number
e200z6 core–CPU instruction / data Master 0 0
e200z6–Nexus Master 0 1
eDMA_A Master 1 2
External bus interface Master 2 3
FEC Master 3 4
Master
Crossbar Switch
Slave
Master modules
Slave modules
Master
Master
Slave
Slave
. . . .
. . . .