13
13-2
Rev.1.0
Table 13.1.1 Outline of the CAN Modules
Item
Content
Protocol
CAN Specification 2.0B active
Number of message slots 16 slots (14 global slots and two local slots) x 2
Polarity
0: Dominant
1: Recessive
Acceptance filter
Global mask: one mask x 2
Local mask: two masks x 2
Baud rate
1 Time quantum (Tq) = (BRP + 1) / CPU clock
(Note)
(BRP: baud rate prescaler set value)
Baud rate =
1
…
Max 1 Mbps
Tq period x number of Tq's in one bit
BRP
: 1-255 (0: disable)
Number of Tq's in one bit = Synchronization S
Propagation S
Phase Segment 1 +
Phase Segment 2
Propagation Segment
: 1-8Tq
Phase Segment 1
: 1-8Tq
Phase Segment 2
: 2-8Tq (IPT = 2)
Remote frame automatic The message slot that received a remote frame automatically to send a data frame.
response function
Time stamp function
This time stamp function is based on a 16-bit counter. The count period can be setto
divide-by-1, 2, 3, or 4 with respect to the CAN bus bit period as the fundamental period.
BasicCAN mode
BasicCAN function is materialized using two local slots.
Transmit abort function
Transmit request can be canceled.
Loopback function
The data transmitted by CAN module itself is received.
Return bus-off function
Forcibly placed into error active mode after clearing the error counter.
Note: The maximum allowable error of oscillation depends on the system configuration (bus length,
communication rate, CAN bus transceiver, sampling position, and bit configuration).
CAN MODULES
13.1 Outline of the CAN Modules
13.1 Outline of the CAN Modules
The 32172/32173 contains two Full CAN modules (CAN0 and CAN1) compliant with CAN
(Controller Area Network) Specification 2.0B active. CAN0 and CAN1 each have 16 message slots
and three mask registers. Making use of these message slots and mask registers helps to reduce
data processing load on the CPU.
The Full CAN modules are outlined below.
Содержание 32172
Страница 20: ... This is a blank page 16 ...
Страница 21: ...1 1 Overview 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Layout CHAPTER 1 CHAPTER 1 OVERVIEW ...
Страница 44: ...1 1 24 Rev 1 0 This is a blank page Overview 1 4 Pin Layout ...
Страница 58: ...2 2 14 Rev 1 0 This is a blank page CPU 2 6 Data Formats ...
Страница 122: ...4 4 26 Rev 1 0 This is a blank page EIT 4 13 Precautions on EIT ...
Страница 200: ...7 7 6 Rev 1 0 This is a blank page RESET 7 4 Precautions to Be Taken Immediately after Reset ...
Страница 240: ...8 8 40 Rev 1 0 This is a blank page INPUT OUTPUT PORTS AND PIN FUNCTIONS 8 5 Precautions on Input Output Ports ...
Страница 298: ...9 9 58 Rev 1 0 This is a blank page DMAC 9 4 Precautions on Using DMAC ...
Страница 416: ...10 10 118 Rev 1 0 This is a blank page INPUT OUTPUT TIMERS 10 6 TOM Output Related 16 bit Timers ...
Страница 658: ...14 14 16 Rev 1 0 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 718: ...16 16 16 Rev 1 0 This is a blank page D A CONVERTERS 16 3 Functional Description of the D A Converters ...
Страница 766: ...18 18 22 Rev 1 0 WAIT CONTROLLER 18 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 776: ...19 19 10 Rev 1 0 RAM BACKUP MODE 19 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 777: ...CHAPTER 20 CHAPTER 20 OSCILLATION CIRCUIT 20 1 Oscillator Circuit 20 2 Clock Generator Circuit ...
Страница 782: ...20 20 6 Rev 1 0 OSCILLATION CIRCUIT 20 2 Clock Generator Circuit This is a blank page ...
Страница 856: ...23 23 26 Rev 1 0 This is a blank page ELECTRICAL CHARACTERISTICS 23 6 AC Characteristics ...
Страница 857: ...24 1 A D Conversion Characteristics CHAPTER 24 CHAPTER 24 STANDARD CHARACTERISTICS ...
Страница 859: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 861: ...Appendix 2 1 M32R E Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 865: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...