Motorola MPC564EVB Manuel d'utilisateur télécharger pdf (Page 13)

MPC562BC 10/31/02

CAN_PORT Termination Options

The RA1-3 option locations provide the CAN_PORT with the ability to add bias and/or termination resistance. RA1 location

provides low bias (to ground) on the CAN Hi signal. RA3 location provides high bias (to +5V) on the CAN Low signal. RA2

location is 120 Ohms by default and provides termination between the respective CAN Port CAN Hi and CAN Low signals.

PWR Jack, Power Port and Power Oak Supply

The Motorola MPC5xx Oak series companion power supply Power Oak (PC33394) is provided on the MPC562BC board. This

device provides many features designed for automotive application but may also be useful for industrial or general purpose

applications. See the PC33394 data sheet on the support CD for full description of features, operation, and capability.

The Power Oak provides a regulated switch mode power source for the 2.6V, 3.3V, and 5V supplies on the EVB board. The basic

application of the Power Oak provides the Reset signals, back-up supplies for the KAPWR and IRAMSTBY to the MPC562, and the

CAN A port transceiver. Options are available on the board and some under software control via the MPC566 QSPI port to modify

the Power Oak application.

The Power Port provides tap points for the power supply outputs from the Power Oak. Following is the Power Port pin assignment:

Power Port Connections

PIN SIGNAL

1 +VIN DC supply

2+5V

3 +3.3V

4 +2.6V

5GND

Refer to Power Oak document for application of the provided power sources.

ON Option

The ON option provides a constant enable to the VIGN signal so the Power Oak is enabled upon power application. The ON option

maybe opened by cutting the trace between the 2 option pads on the top side of the board. This will allow application of the VIGN

signal externally with a switch or other source. Basic operation of the VIGN signal is to apply +VIN to enable the Power Oak

supplies.

PWR Jack

PWR jack connection provides power input from the supplied wall plug power source. Typical input is +12VDC. The PWR jack

provides a center positive terminal and ground outside sleeve. The jack accepts 2.1mm inside x 5.5mm outside power plugs.

PWR Front View

2mm Center Pin, Positive Volt

5.5mm Outer Ring, Ground

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Motorola MPC564EVB Manuel d'utilisateur Page 13