P82C150AFT Philips Semiconductors, P82C150AFT Datasheet - Page 25

• Manufacturer Part Number: P82C150AFT
• Description: CAN Serial Linked I/O device SLIO with digital and analog port functions
• Manufacturer: Philips Semiconductors

Philips Semiconductors
11 APPLICATION INFORMATION
11.1
The bit timing parameters refer to using a P8xCE598 or
P8xC592 microcontroller with on-chip CAN interface as a
host node (see Fig.20).
Table 15 Maximum bus length for CAN-bus systems with P82C150 nodes.
Notes
1. t
2. BTR0 and BTR1 (hex values) are particular configuration registers referring to bit timing.
11.2
The following start-up sequence, illustrated by
Figures 10 and 11, shows a simple example how
P82C150 nodes can be controlled from a host node. This
application example works with different system
configurations:
1996 Jun 19
One conventional crystal-controlled CAN node and one
or more P82C150 nodes.
More than one conventional crystal-controlled CAN
node and one or more P82C150 nodes.
CAN Serial Linked I/O device (SLIO) with
digital and analog port functions
included).
prop
BIT RATE
(kbit/s)
Maximum bus length
Start up sequence
125
100
is the maximum propagation delay between two CAN-bus nodes (delays of on- and off-chip transceiver circuits
50
20
t
prop
( s)
0.8
1
2
5
(1)
FOR MAXIMUM
BUS LENGTH
INDICATION
145
445
(m)
25
45
25
11.1.1
handbook, halfpage
The total in/out delay of external transceiver circuit is
less than 180 ns (e.g. PCA82C250 CAN transceiver;
see Fig.20).
The propagation delay on the transmission medium is
5.0 ns/m.
(1) See Fig.11.
Fig.10 General start-up procedure for CAN-bus
(MHz)
f
CLK
15
16
16
16
A
BIT TIMING (P8xCE598/P8xC592)
SSUMPTIONS
systems with P82C150 nodes.
repetition period of maximum 8000 bit times)
Wait until all P82C150 nodes are assumed
Initialization of host node's CAN controller
Start-up bit time calibration procedure
(transmit calibration message with a
to have finished Power-on-reset
Periodic calibration
BTR0
Power-on
CFH
C5H
C7H
E7H
(1)
(2)
Preliminary specification
P82C150
MHA077
BTR1
34H
34H
34H
34H
(2)