MPC821 datasheet(10/242 Pages) NXP

10 / 242 page

Hardware Preparation and Installation

MPC8XXFADS Design Specification—Rev 0.1

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Daughter Board user’s manual.

2•3•4

VDDL Source Selection

This selection is done on the Daughter Board and therefore, documented in the specific Daughter

Board user’s manual.

2•3•5

Keep Alive Power Source Selection

This selection is done on the Daughter Board and therefore, documented in the specific Daughter

Board user’s manual.

2•3•6

Debug Mode Indication Source Selection

Jumper J1 selects between VFLS(0:1) signals and FRZ signal of the MPC as an indication for debug

mode state. Since with the MPC8XXs, each of these signals has alternate function, it may be neces-

sary to switch between the two sources, in favor of alternate function being used.

When a jumper is positioned between pins 1 and 2 of J1 - VFLS(0:1) are selected towards the debug-

port controller. When a jumper is placed between positions 2 - 3 of J1(2) - FRZ signal is selected.

FIGURE 2-3

2•4

INSTALLATION INSTRUCTIONS

When the MPC8XXFADS has been configured as desired by the user, it can be installed according

to the required working environment as follows:

•

Host Controlled Operation

•

Debug Port Controller for Target System

•

Stand-Alone

2•4•1

Host Controlled Operation

In this configuration the MPC8XXFADS is controlled by a host computer via the ADI through the

debug port. This configuration allows for extensive debugging using on-host debugger.

VFLS(0:1) Selected

FRZ Selected

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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