SJA1000 NXP Semiconductors, SJA1000 Datasheet - Page 12
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SJA1000
Manufacturer Part Number
SJA1000
Description
Manufacturer
NXP Semiconductors
Datasheet
1.SJA1000.pdf
(68 pages)
Specifications of SJA1000
Data Rate
1000Kbps
Number Of Transceivers
1
Power Down Mode
Sleep
Standard Supported
CAN 2.0B
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Package Type
PDIP
Supply Current
15mA
Operating Temperature (max)
125C
Operating Temperature (min)
-40C
Operating Temperature Classification
Automotive
Mounting
Through Hole
Pin Count
28
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SJA1000
Manufacturer:
PHILIPS/飞利浦
Quantity:
20 000
Company:
Part Number:
SJA1000N
Manufacturer:
NXP
Quantity:
5 510
Part Number:
SJA1000N
Manufacturer:
PHILIPS/飞利浦
Quantity:
20 000
Part Number:
SJA1000T
Manufacturer:
NXP
Quantity:
20 000
Part Number:
SJA1000T SJ
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Part Number:
SJA1000T/N1
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Company:
Part Number:
SJA1000T/N1,118
Manufacturer:
XILINX
Quantity:
125
Philips Semiconductors
Notes
1. X means that the value of these registers or bits is not influenced.
2. Remarks in brackets explain functional meaning.
3. Reading the command register will always reflect a binary ‘11111111’.
4. On bus-off the error interrupt is set, if enabled.
5. Internal read/write pointers of the RXFIFO are reset to their initial values. A subsequent read access to the RXB
6.3.3
The contents of the control register are used to change the behaviour of the CAN controller. Bits may be set or reset by
the attached microcontroller which uses the control register as a read/write memory.
Table 3 Bit interpretation of the control register (CR); CAN address 0
2000 Jan 04
CR.7
CR.6
CR.5
CR.4
CR.3
CR.2
Stand-alone CAN controller
would show undefined data values (parts of old messages). If a message is transmitted, this message is written in
parallel to the receive buffer but no receive interrupt is generated and the receive buffer area is not locked. So, even
if the receive buffer is empty, the last transmitted message may be read from the receive buffer until it is overridden
by the next received or transmitted message.
Upon a hardware reset, the RXFIFO pointers are reset to the physical RAM address ‘0’. Setting CR.0 by software or
due to the bus-off event will reset the RXFIFO pointers to the currently valid FIFO start address which is different
from the RAM address ‘0’ after the first release receive buffer command.
BIT
C
ONTROL
OIE
EIE
TIE
SYMBOL
R
EGISTER
Overrun Interrupt Enable
Error Interrupt Enable
Transmit Interrupt Enable
(CR)
NAME
VALUE
12
1
0
1
0
1
0
reserved; note 1
reserved; note 2
reserved; note 3
enabled; if the data overrun bit is set, the
microcontroller receives an overrun interrupt
signal (see also status register; Table 5)
disabled; the microcontroller receives no overrun
interrupt signal from the SJA1000
enabled; if the error or bus status change, the
microcontroller receives an error interrupt signal
(see also status register; Table 5)
disabled; the microcontroller receives no error
interrupt signal from the SJA1000
enabled; when a message has been successfully
transmitted or the transmit buffer is accessible
again, (e.g. after an abort transmission command)
the SJA1000 transmits a transmit interrupt signal
to the microcontroller
disabled; the microcontroller receives no transmit
interrupt signal from the SJA1000
FUNCTION
Product specification
SJA1000