CY8C34_11 CYPRESS [Cypress Semiconductor], CY8C34_11 Datasheet - Page 48

• Manufacturer Part Number: CY8C34_11
• Manufacturer: CYPRESS [Cypress Semiconductor]

7.5.1 CAN Features
Document Number: 001-53304 Rev. *K
RxInterrupt
(if enabled)
CAN2.0A/B protocol implementation – ISO 11898 compliant
Listen Only mode
SW readable error counter and indicator
Sleep mode: Wake the device from sleep with activity on the
Rx pin
Supports two or three wire interface to external transceiver (Tx,
Rx, and Enable). The three-wire interface is compatible with
the Philips PHY; the PHY is not included on-chip. The three
wires can be routed to any I/O
Enhanced interrupt controller
Request
Standard and extended frames with up to 8 bytes of data per
frame
Message filter capabilities
Remote Transmission Request (RTR) support
Programmable bit rate up to 1 Mbps
CAN receive and transmit buffers status
CAN controller error status including BusOff
RxMessage
Rx Buffer
Available
Status
(if enabled)
TxInterrupt
RxMessage14
RxMessage15
RxMessage0
RxMessage1
Request
Tx Buffer
Pending
TxReq
Status
Acceptance Code 14
Acceptance Code 15
Acceptance Code 0
Acceptance Code 1
Figure 7-19. CAN Controller Block Diagram
RTR RxMessages
TxMessage0
TxReq
TxAbort
TxMessage1
TxReq
TxAbort
TxMessage6
TxReq
TxAbort
TxMessage7
TxReq
TxAbort
0-15
Acceptance Mask 14
Acceptance Mask 15
Acceptance Mask 0
Acceptance Mask 1
7.5.2 Software Tools Support
CAN Controller configuration integrated into PSoC Creator:
Receive path
Transmit path
CAN Configuration walkthrough with bit timing analyzer
Receive filter setup
16 receive buffers each with its own message filter
Enhanced hardware message filter implementation that
covers the ID, IDE and RTR
DeviceNet addressing support
Multiple receive buffers linkable to build a larger receive
message array
Automatic transmission request (RTR) response handler
Lost received message notification
Eight transmit buffers
Programmable transmit priority
• Round robin
• Fixed priority
Message transmissions abort capability
RxMessage
ErrInterrupt
(if enabled)
Request
Handler
Priority
Arbiter
PSoC
Error Status
Error Detection
Framer
Framer
Tx Error Counter
Rx Error Counter
CAN
CAN
Rx
Tx
CRC
Form
ACK
Bit Stuffing
Bit Error
Overload
Arbitration
®
Error Active
Error Passive
Bus Off
3: CY8C34 Family
CRC Check
Generator
CRC
Data Sheet
Bit Timing
Page 48 of 126
WakeUp
Request
Tx
Rx
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