MPC821 datasheet(42/242 Pages) NXP

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Functional Description

MPC8XXFADS Design Specification—Rev 0.1

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

4•9

Communication Ports

Since the FADS platform is meant to serve all the MPC8XX family, it only contains modules that are

common to all family members. The various communication ports for the present and future family

members are shown in TABLE 4-8. "MPC8XX Family Comm. Ports" below:

As can be seen from the above table the Ethernet, I/R and Uart (RS232) support are common to allA

family members. Therefore, the FADS is equipped with 2 port of RS232, each with independent

enable via BCSR and an IRDA transceiver, supporting Fast IRDA.

4•9•1

Ethernet Port

An Ethernet port with T.P. (10-Base-T) I/F is provided on the MPC8XXFADS. The comm. port over

which this port resides, is determined according to the MPC typeB. Use is done with the MC68160

EEST 10-base-T transceiver, used also with the MPC8XXFADS.

To allow alternative use of the Ethernet’s SCC pins, they appear at the expansion connectors over

the daughter-board and over the Comm. Ports expansion connector (P8) of the this board, while the

Ethernet transceiver may be Disabled / Enabled at any time by writing ’1’ / ’0’ to the EthEn~ bit in

BCSR1.

4•9•2

Infra-Red Port

An infra-Red communication port is provided with the FADS - the Temic’s TFDS 6000 integrated

transceiver, which incorporates both the receiver and transmitter optical devices with the translating

logic and supports Fast IrDA (upto 4 Mbps). The comm. port over which this port resides, is deter-

a. This is an interchip protocol and therefore will not be supported for evaluation.

A. Except for the MPC801 which does not have Ethernet support.

B. I.e., routing is done on the daughter board.

TABLE 4-8. MPC8XX Family Comm. Ports

Family Member - MPC

Comm.

Port

801

823

821

860

860SAR

860T

SCC1

Uart, IrDA

USB

+Enet

SCC2

Uart, IrDA

+Enet,

Fast IrDA

+IrDA

+Enet,

IrDA

+Enet,

IrDA

+Enet,

IrDA

SCC3

+Enet

SCC4

+Enet

SMC1

Uart

SMC2

TDM

Only

Uart

SPIa

I2Ca

Fast Enet

Utopia

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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