Kvaser PCIcan Quick user guide

PCIcan
Hardware Reference Manual
KVASER
Copyright © 2006 KVASER AB, Kinnahult, Sweden
http://www.kvaser.com
Last revised February 21, 2006
We believe that the information contained herein was accurate in all respects at the time of
printing. KVASER AB cannot, however, assume any responsibility for errors or omissions in
this text. Also note that the information in this document is subject to change without notice
and should not be construed as a commitment by KVASER AB.

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Introduction
Scope of this document
This document describes the following standard variants of the PCIcan board:
Product Name Part Number Description
PCIcan-S 733-0130-00082-7 1 x SJA1000, 82c251 driver
PCIcan-D 733-0130-00083-4 2 x SJA1000, 82c251 drivers
PCIcan-Q 733-0130-00084-1 4 x SJA1000, 82c251 drivers
PCIcan-SWC1 733-0130-00088-8 1 x SJA1000, 5790 drivers (Single-Wire CAN)
PCIcan-SWC2 733-0130-00089-6 2 x SJA1000, 5790 drivers (Single-Wire CAN)
PCIcan-LS1 733-0130-00085-8 1 x SJA1000, TJA1053 drivers
PCIcan-LS2 733-0130-00086-5 2 x SJA1000, TJA1053 drivers
Please note that the product names for PCIcan-S, -D, -Q changed to PCIcan-HS, -HS/HS, -
4XHS during 2004/2005. This change was necessary due the introduction of PCIcan boards
with low speed and single wire CAN bus drivers. In addition, the part number was shortened
to the 6 last digits due practical reasons. However, both part numbers are valid. These changes
affect the product name and the part number only. The product itself is identical in all other
aspects.

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General Description
KVASER’s PCIcan cards for CAN systems feature up to four CAN controllers.
The outputs from the CAN circuits are connected to a 25 pin DSUB (PCIcan-Q) or one or two
9-pin DSUB (all other types) via optocouplers and CAN bus driver circuits.
The bus driver circuits of type 82C251 conforms to the physical layer specified by the ISO
11898 standard and can operate up to 1 Mbit/s.
The bus driver circuits of type 5790 conforms to the physical layer specified by the SAE 2411
standard and can operate up to 25 kbit/s in normal mode and up to 80 kbit/s in high-speed
mode.
The bus driver circuits of type TJA1053 are intended for automotive body electronics buses
and can operate up to 125 kbit/s.
On the PCIcan-Q it is possible to connect all CAN circuits to a common CAN bus, which also
is connected to the DSUB connector. A built-in terminator may be connected to the common
bus if this board is at one end of the bus cable. It is necessary to have a resistor load connected
between the two bus wires to make the ISO 11898 drivers work. The 25-pin connector also
provides a ground point to the two bus sections of optocouplers and drive circuits.
PCIcan Features
• Up to four CAN circuits on one card.
• Optical isolation between the card and the CAN buses.
• DC/DC power supply to galvanically isolated bus drivers.

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Specifications
General
Size PCI-bus PC card (135 mm)
Power consumption PCIcan-Q: max 600 mA @ 5V.
CAN bus connector 25-pin DSUB, female, for PCIcan-Q CAN buses. (See p. 10)
2 x 9-pin DSUB, male, for PCIcan-D CAN buses. (See p.
10)
9-pin DSUB, male, for PCIcan-S CAN bus. (See p. 10)
CAN Controller(s)
PCIcan-Q: 4 x SJA1000
PCIcan-D, PCIcan-LS2, PCIcan-SWC2: 2 x SJA1000
PCIcan-S, PCIcan-LS1, PCIcan-SWC1: 1 x SJA1000
CAN Clock frequency: 16 MHz
CAN Bus Driver(s)
Drivers PCIcan-Q, -D, -S: Philips 82C251; compliant with the ISO
11898 standard.
PCIcan-LS2, -LS1: Philips TJA1053
PCIcan-SWC2, -SWC1: Philips AU5790c
Voltage feed The drivers are galvanically separated (selectable by
switches) from the power supply on the PC by on-board
DC/DC converters.
Grounding The ground of the CAN drivers is available at the DSUB
connector. On the PCIcan-Q it is also possible to connect
the driver ground to the PC ground by a switch on the
PCIcan board.
Other Features
• Fast optocouplers between CAN circuits and drivers.
• CAN driver part fed by the PC through DC/DC-converters (the PCIcan-SWC2, and -
SWC1 requires external power supply.)

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Schematics
CAN
Driver
CAN
Driver
Optocoupler
DC/DC
Converter
CAN Controller
SJA1000
CAN Controller
SJA1000
PCI Bridge
AMCC S5920
PCI Bridge
AMCC S5920
PCI Bus Connector
PCI Bus Connector
IRQ A
CAN 1
CAN 2 (equal to CAN 1)
CAN 3 (equal to CAN 1)
CAN 4 (equal to CAN 1)
120 Ohm
Common (on-board) CAN bus
CAN Bus Connector (D-SUB)
Figure 1: Block diagram for PCIcan-Q.

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CAN
Driver
CAN
Driver
Optocoupler
DC/DC
Converter
CAN Controller
SJA1000
CAN Controller
SJA1000
PCI Bridge
AMCC S5920
PCI Bridge
AMCC S5920
PCI Bus Connector
PCI Bus Connector
IRQ A
CAN 1
CAN 2 (equal to CAN 1) – only on PCIcan-D
CAN Bus Connector (D-SUB)
Figure 2: Block diagram for PCIcan–D, –S, –LS2, –LS1, –SWC2, and –SWC1.

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The PCIcan Hardware
Installation
PCIcan-D, -S, -LS2, -LS1, -SWC2, and -SWC1 have no switches and so are plug-and-play.
PCIcan-Q has switches that allow you to
1) connect driver ground to PC ground (see “Selecting Driver Ground (PCIcan-Q only)”
below),
2) connect any of the four CAN channels to a common CAN bus and possibly terminate the
common bus (see “The Common CAN Bus (PCIcan-Q only)” below.)
After you have configured the switches, power down the computer, insert the board into an
empty PCI slot, and power up the computer.
Figure 3: The switches on the PCIcan-Q board

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The CAN Bus
On PCIcan-Q, -D and –S, the CAN bus drivers are 82C251 type and compliant with the ISO
11898 physical layer standard.
On PCIcan-LS2 and –LS1, the CAN bus drivers are of TJA1053 or TJA1054 type.
On PCIcan-SWC2 and –SWC1 the CAN bus drivers are of AU5790c type. The bus driver
requires an external power source.
The CAN bus is galvanically isolated from the card by means of fast optocouplers. These
optocouplers introduce a small signal delay and decreases the maximum allowed bus length
somewhat.
For PCIcan-S, PCIcan-D, and PCIcan-Q, the optocouplers allow for a CAN bus speed up to 1
Mbit/s.
Selecting Driver Ground (PCIcan-Q only)
Using switch pack SW1 you can connect the grounds at the driver part to the ground of the
PC. This is normally not necessary but it may sometimes be advantageous.
Switch pack SW1 is the small switch pack located near the 25-pin DSUB connector.
Table 1. Switch Pack 1.
SW3 Function
1 ON: PC ground and the ground of CAN driver #1 and #2 are connected.
OFF: PC ground and the ground of CAN driver #1 and #2 are not connected.
Default is OFF.
2 ON: PC ground and the ground of CAN driver #3 and #4 are connected.
OFF: PC ground and the ground of CAN driver #3 and #4 are not connected.
Default is OFF.
3 Not used. Default is OFF.
Factory settings are: all switches OFF, meaning that the PC, and the CAN controller circuits,
are galvanically isolated from the CAN bus.
The Common CAN Bus (PCIcan-Q only)
Using switch pack SW2, you can connect the four different CAN buses to one single bus on
the board. This common CAN bus is also accessible at the DSUB connector. This allows
communication between two or more of the circuits on the card without having to connect any
cables.
Switch pack SW2 is the large switch pack near the 25-pin DSUB connector.

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Table 2. Switch Pack 2.
SW2- When set to ON, it connects...
1 On-board terminating resistance to common CAN-L.
2 On-board terminating resistance to common CAN-H.
3 CAN-L of SJA1000 #1 to common CAN-L.
4 CAN-H of SJA1000 #1 to common CAN-H.
5 CAN-L of SJA1000 #2 to common CAN-L.
6 CAN-H of SJA1000 #2 to common CAN-H.
7 CAN-L of SJA1000 #3 to common CAN-L.
8 CAN-H of SJA1000 #3 to common CAN-H.
9 CAN-L of SJA1000 #4 to common CAN-L.
10 CAN-H of SJA1000 #4 to common CAN-H.
All switches are set to ON when the product is delivered. This means that all CAN buses and
the terminator are connected to the common bus.
External power supply (PCIcan–SWC2 and –SWC1)
The PCIcan–SWC2 and –SWC1 have a type of CAN bus driver that under certain
circumstances can consume a lot of power. For this reason the bus drivers in these cards are
not powered from the PC. You must supply power to the bus driver from an external source.
The power shall be supplied to pin 9 on the D-SUB connector (s). For PCIcan-SWC2 you
need to supply power to both connectors.
The voltage is nominal +12V DC (min 5.5V, max 26.5V.) Current consumption may go up to
200 mA per bus under certain circumstances.
CAN Bus Termination (PCIcan-Q)
A selectable CAN bus termination is built-in on the PCIcan-Q boards. You activate it by
setting switches 1 and 2 on switch pack 1 to ON. The termination works only on the common
CAN bus. The four individual CAN busses are not affected by the built-in termination.
To avoid signal reflections at the bus ends, terminating resistors must be mounted at both ends
of the CAN bus. The on-board terminating resistor is 120Ω, which is the standard for CAN
buses, and should work fine for most cables. Please observe that this internal resistor can only
be used if the board is placed at one of the ends of the CAN-bus. The terminating resistor is
only available from the on-board common CAN-bus.
The terminating resistors also serves as a load between the CAN bus wires; this is needed for
the ISO 11898 compliant bus drivers to work properly.

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CAN Bus Termination (PCIcan-D, -S)
The PCIcan-S and PCIcan-D do not have built-in termination as standard. There is room for
mounting terminating resistors (R1, R3) which are located very close to the 9-pin DSUB
connector(s).
CAN Bus Termination (PCIcan-LS2, -LS1, -SWC2, -SWC1)
No separate bus termination is needed for these boards.
The D-SUB connector(s)
Table 3. The 25-pin DSUB connector on the PCIcan-Q.
Pin Function
1, 2 Ground to CAN drivers #1 and #2.
14, 15 Ground to CAN drivers #3 and #4.
4 CAN-L for the common CAN bus.
16 CAN-H for the common CAN bus.
5 CAN-L for CAN #1
19 CAN-H for CAN #1
7 CAN-L for CAN #2
21 CAN-H for CAN #2
9 CAN-L for CAN #3
23 CAN-H for CAN #3
11 CAN-L for CAN #4
25 CAN-H for CAN #4
Table 4. The 9-pin DSUB connector(s) on PCIcan-S, -D, -LS2 and -LS1.
Pin Function
2 CAN-L
7 CAN-H
3 Signal ground.