pca82c200t NXP Semiconductors, pca82c200t Datasheet - Page 30

• Manufacturer Part Number: pca82c200t
• Description: 8-bit Microcontroller With On-chip Can
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 29 Hardware blocks of the CAN-controller (see Fig.14)
1996 Jun 27
handbook, full pagewidth
Interface Management Logic IML
Transmit Buffer
Receive Buffers (0 and 1)
Bit Stream Processor
Bit Timing Logic
Transceiver Control Logic
Error Management Logic
8-bit microcontroller with on-chip CAN
NAME
address
data
Fig.14 Block diagram of the P8xCE598 on-chip CAN-controller.
BLOCK
TBF
RBF0
RBF1
BSP
BTL
TCL
EML
MANAGEMENT
Interprets commands from the CPU, allocates the message buffers
(TBF, RBF0 and RBF1) and provides interrupts and status information to the
microcontroller.
10 bytes memory into which the CPU writes messages which are to be
transmitted over the CAN network.
RBF0 and RBF1 are each 10 bytes memories which are alternatively used to
store messages received from the CAN network.
The CPU can process one message while another is being received.
Is a sequencer, controlling the data stream between the Transmit Buffer,
Receive Buffers (parallel data) and the CAN-bus (serial data).
Synchronizes the CAN-controller to the bitstream on the CAN-bus.
Controls the output driver.
Performs the error confinement according to the CAN-protocol.
INTERFACE
TRANSMIT
BUFFER 1
BUFFER 0
RECEIVE
RECEIVE
BUFFER
LOGIC
ON - CHIP
30
CONTROLLER
TRANSCEIVER
MANAGEMENT
PROCESSOR
CAN
BIT STREAM
BIT TIMING
DESCRIPTION
ERROR
LOGIC
LOGIC
LOGIC
2
2
MGA159
CRX0
CRX1
CTX0
CTX1
and
and
Product specification
P8xCE598