Compaq NetPorty II Manual De Usuario

Physical Interface

Version 1.03

3-5

NetPorty II has the transceiver chip 82C251 (according
to ISO 11898) as physical interface. It is not galvanic
disconnect. The standard physical interface is linked to
the SJA1000, the Output Control Register must be set
to 0xFA.

To connect the second CAN channel or the ISO 9141
channel an optional physical line driver have to be
ordered.

State of LED during download firmware:

At serial download:

no fixed state.

At parallel download

LED 1 green
LED 2 green (flashing)

State of LED during work:

Color

LED 1

LED 2

LED 3

Red

-

-

Bus off

green

Life cycle flash

Flashing during
RS232/Parallel
data transfer

Bus on

2. Data transfer

3. BUS on/off

1.Life cycle flash