Motorola MPC564EVB Manuel d'utilisateur télécharger pdf (Page 22)

1-12 MPC564EVB User’s Manual

Communication Ports

JP1 – COM2 DCE/DTE Option:

COM-2 is optioned as a DCE type RS232 connection by default (same as COM-1). This allows

direct connection to a standard 9 pin PC COM serial port.

COM-2 DTE option. This requires a NULL modem adapter to connect to a standard 9 pin PC

COM serial port.

AT1/2, AR1/2 - Serial Port Configuration

The AT1, AT2, AR1 and AR2 cut-away options provide a means of isolating the individual SCI

RXD and TXD signals from the RS232 interface translator device (U10) and COM port operation.

This allows the SCI channels to be used for other purposes, possibly on the QSM port connector.

Following is a table of the SCI signals and AT/R_ positions used for enabling RS232 and COM

port operation. Note: 2mm header maybe installed after cutaways are cut to allow jumper option.

Table 1-4. Serial Port Configuration

1.4.2 CAN PORTs and Options

The MPC564EVB board provides 3 CAN transceivers with I/O ports: CAN_A, CAN_B, and

CAN_C. CAN_A is supported by the PC33394 Power Oak CAN transceiver. The CAN_B and

CAN_C ports are supported by Philips PCA82C250 1M Baud CAN transceivers. The MPC564

CAN_A port is directly interfaced to the Power Oak transceiver and can not be isolated easily. The

MPC564 CAN_B and C ports are interfaced to the MPC564 TOUCAN channels B and C by option

jumpers B_RX, C_TX, and C_RX.

CAN_A

••

AT_ Position SCI Channel

Signal

RS232 COM Port

Connection

COM_PORT Signal

Direction to RS232

interface translator

AT1 SCI_A_ TXD1 COM-1 Output

AR1 SCI_A_ RXD1 COM-1 Input

AT2 SCI_A_ TXD2 COM-2 Output

AR2 SCI_A_ RXD2 COM-2 Input

The MPC533/4 has limited or no functionality for this module. See Appendix A

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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Motorola MPC564EVB Manuel d'utilisateur Page 22