AN2757 Freescale Semiconductor / Motorola, AN2757 Datasheet - Page 22

• Manufacturer Part Number: AN2757
• Description: MPC5200 Quick Start
• Manufacturer: Freescale Semiconductor / Motorola

Graphical Configuration Tool
Figure 20. Memory Map Control Page (IPBI)
Also another GCT feature can be demonstrated on the IPBI page example. Like at many other MPC5200 peripheral modules,
there are control registers specifying some kind of address values (CS Start and Stop addresses in this case). Control registers
often (intentionally) do not implement full 32-bits of the address, and rather implement e.g. just 16 upper address bits assuring
the 64kB alignment. On the other side, the GCT always displays the address fields as a full 32-bit value - so it is be better
understood by the user. When the address is modified in a way that a new value contains bits not implemented in the peripheral
register, the user is warned and he is offered a nearest “aligned” address value to be used.
6.6.4
Local Plus Bus (LPC)
Local Plus Bus settings is spread over several control pages in the GCT. Like at the CDM module’s control page (see
Section 6.6.1, Clock Distribution Module
(CDM)), the LPC Chip Selects control page displays the settings controlled by a
configuration of electrical switches on the MPC5200 board (“Boot CS” settings in this case). Similarly as on the CDM page, the
user must knowingly enable modifying of the hardware-controlled configuration items.
AN2757 MPC5200 Quick Start and Graphical Configuration Tool
22
Freescale Semiconductor