PXR40RM Datasheet, PDF (434/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

AMBA Crossbar Switch (XBAR)
14.1.2 Block Diagram
Figure 14-1 shows a block diagram of the crossbar switch.
Master
Master ^{. . . .}
Master
Crossbar Switch
Master modules
Slave modules
Slave
Slave
....
Slave
Figure 14-1. XBAR Block Diagram
Table 14-1 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 14-1. XBAR Switch Ports
Module
Port
Type Number
Master ID
e200z7 core0 — CPU instruction
Master 0
0
e200z7 core0 — Data
Master 1
0
Nexus 3
8
eDMA_A
Master 4
4
eDMA_B
Master 5
5
FlexRay
Reserved¹
Master 6
6
Master 7
3
On-chip Flash (accessed by core 0 only)
Slave 0
—
EBI (development bus)
Slave 1
—
On-chip SRAM
Slave 2
—
Peripheral bridge A (PBRIDGE_A)
Slave 6
—
Peripheral bridge B (PBRIDGE_B)
Slave 7
—
1 _{This port is not usable by customers, but exists in the device. Therefore, the priority must be set}
to a unique value in the Master Priority Registers.
14.1.3 Features
• Multiple master and slave ports with programmable priorities and attributes.
14-2
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor