ST92F150-EVAL STMicroelectronics, ST92F150-EVAL Datasheet - Page 326

• Manufacturer Part Number: ST92F150-EVAL
• Description: BOARD EVALUATION FOR ST9 SERIES
• Manufacturer: STMicroelectronics

Specifications of ST92F150-EVAL

• Processor To Be Evaluated: ST90158 and ST92F1x Daughter Board
• Interface Type: I2C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2905

CONTROLLER AREA NETWORK (bxCAN)
CONTROLLER AREA NETWORK (Cont’d)
CAN 2.0B Active Core
The bxCAN module handles the transmission and
the reception of CAN messages fully autonomous-
ly. Standard identifiers (11-bit) and extended iden-
tifiers (29-bit) are fully supported by hardware.
Control, Status and Configuration Registers
The application uses these registers to:
– Configure CAN parameters, e.g.baud rate
– Request transmissions
– Handle receptions
– Manage interrupts
– Get diagnostic information
Figure 143. CAN Block Diagram
326/429
9
Master Control
Interrupt Enable
Page Select
Master Status
Transmit Control
Transmit Status
Transmit Priority
Receive FIFO
Error Status
Error Int. Enable
Tx Error Counter
Rx Error Counter
Diagnostic
Bit Timing
Filter Mode
Filter Config.
Tx Mailboxes
Transmission
Mailbox 0
Mailbox 1
Scheduler
Mailbox 2
Filter
CAN 2.0B Active Core
Tx Mailboxes
Three transmit mailboxes are provided to the soft-
ware for setting up messages. The transmission
Scheduler decides which mailbox has to be trans-
mitted first.
Acceptance Filters
The bxCAN provides eight scalable/configurable
identifier filter banks for selecting the incoming
messages the software needs and discarding the
others.
Receive FIFO
Two receive FIFOs are used by hardware to store
the incoming messages. Three complete messag-
es can be stored in each FIFO. The FIFOs are
managed completely by hardware.
Receive FIFO 0
Mailbox 0
0
Acceptance Filters
1
1
2
2
3
Receive FIFO 1
Mailbox 0
4
5
6
1
2
7