MPC821 datasheet(17/242 Pages) NXP

17 / 242 page

OPERATING INSTRUCTIONS

MPC8XXFADS Design Specification—Rev 0.1

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

and logic-analyzer connection.

Warning

When connecting to a GND bridge, use only INSU-

LATED GND clips. Failure in doing so, might result

in permanent damage to the MPC8XXFADS.

3•2•6

ETH ON - LD1

When the yellow ETH ON led is lit, it indicates that the ethernet port transceiver - the MC68160 EEST,

is active. When it is dark, it indicates that the EEST is in power down mode, enabling the use of its

associated SCC pins off-board via the expansion connectors.

3•2•7

IRD ON - LD2

When the yellow IRD ON led is lit, it indicates that the Infra-Red transceiver - the TFDS6000, is active

and enables communication via that medium. When it is dark, the I/R transceiver is in shutdown

mode, enabling the use of its associated SCC pins off-board via the expansion connectors.

3•2•8

RS232 Port 1 ON - LD3

When the yellow RS232 Port 1 ON led is lit, it designates, that the RS232 transceiver connected to

PA2, is active and communication via that medium is allowed. When darkened, it designates that the

transceiver is in shutdown mode, so its associated MPC pins may be used off-board via the expan-

sion connectors.

3•2•9

RS232 Port 2 ON - LD4

When the yellow RS232 Port 2 ON led is lit, it designates that the RS232 transceiver connected to

PB2,

is active and communication via that medium is allowed. When darkened, it designates, that the

transceiver is in shutdown mode, so its associated MPC pins may be used off-board via the expan-

sion connectors.

3•2•10

Ethernet RX Indicator - LD5

The green Ethernet Receive LED indicator blinks whenever the EEST is receiving data from one of

the Ethernet port.

3•2•11

Ethernet TX Indicator - LD6

The green Ethernet Receive LED indicator blinks whenever the EEST is transmitting data via the

Ethernet port.

3•2•12

Ethernet JABB Indicator - LD7

The red Ethernet TP Jabber LED indicator - JABB, lights whenever a jabber condition is detected on

the TP ethernet port.

3•2•13

Ethernet CLSN Indicator LD8

The red Ethernet Collision LED indicator CLSN, blinks whenever a collision condition is detected on

the ethernet port, i.e., simultaneous receive and transmit.

3•2•14

Ethernet PLR Indicator - LD9

The red Ethernet TP Polarity LED indicator - PLR, lights whenever the wires connected to the receiver

input of the ethernet port are reversed. The LED is lit by the EEST, and remains on while the EEST

has automatically corrected for the reversed wires.

3•2•15

Ethernet LIL Indicator - LD10

The yellow Ethernet Twisted Pair Link Integrity LED indicator - LIL, lights to indicate good link integrity

on the TP port. The LED is off when the link integrity fails.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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