User's Manual
Table Of Contents
- Contents
- 1 Overview
- 2 DC and AC Characteristics
- 3 Electrical Interface
- 4 SPI Interface and Sequences
- 5 Power States
- 6 Messaging Protocol
- 7 microNode Provisioning
- 8 Antenna Diversity
- 9 Regulatory Considerations
- 10 Manufacturing Considerations
- 11 Errata
- Appendix A Abbreviations and Terms
- Appendix B PCB Land Pattern and Vias
- Appendix C REACH AND RoHS Compliance
- Appendix D On-Ramp Wireless RMA Process
- Appendix E microNode Mechanical Drawing
microNode Integration Specification Messaging Protocol
On-Ramp Wireless, Inc. 36 014-0033-00 Rev. H
These bits indicate:
MISO: from slave to master (01)
length of message=2 (10)
opcode=SMsgACK (1011)
buffer size=255 (11111111)
payload size=4 (00000100)
MOSI: from master to slave (10)
length of message=2 (10)
opcode =SmsgREQ (1011)
buffer size=255 (11111111)
The SMsg exchange is followed by the SHdr exchange, which includes the payload of the ACK
message.
MISO: 01101100000000010000100000000000001100000000000011110000111100001010
010110100101
MOSI: 10101100000000010000000000000000000000000000000000000000000000000000
000000000000
These bits indicate:
MISO: from slave to master (01)
length of message=2 (10)
opcode=SHdrACK (1100)
Hard coded byte=1 (00000001)
Payload:
length=8 (0000100000000000)
message type=ACK (0011000000000000)
trailing sequence (11110000111100001010010110100101)
MOSI: from master to slave (10)
length of message=2 (10)
opcode =ShdrREQ (1100)
Hard coded byte=1 (00000001)
Unused Extra Data (0000…...0)