HI-3200, HI-3201
Type 2 CAN Transmit Descriptor Frame Format
Type 2 CAN transmit descriptors use a pre-loaded 256
entry common look-up table to define the CAN ID field of
the transmitted frame.
CAN Data Byte values may be directly loaded from the
host CPU / Auto-initialization EEPROM, or are read from
the ARINC 429 Received Data RAM or CAN Bus
Received Data RAM as indexed by the two data source
descriptor bytes (op-code byte and index byte).
0x7FFF
ID Entry 255
Data Byte n Value Byte
0x7FF8
Data Byte n Action Byte
Data Byte 2 Value Byte
Data Byte 2 Action Byte
}
ID Entry 2
ID Entry 1
Data Byte 1 Value Byte
Data Byte 1 Action Byte
ID Table Entry # (0 - FF)
0x7C08
0x7C04
0x7C00
ID6 to ID0, r0
ID14 to ID7
ID Entry 0
ID20 to ID18, SRR, IDE, ID17 to ID15
ID28 to ID21
Type 2 Descriptor Header Byte
Type 2 Descriptor Block
Type 2 ID Look-up Table
Type 2 ID Table Entry
Type 3 CAN Transmit Descriptor Frame Format
Type 3 CAN transmit descriptors are used when
transmitting frames using CAN Identifier and Data
payload extracted from the ARINC 429 Received Data
RAM, CAN Bus Received Data RAM, or host CPU / Auto-
initialization EEPROM loaded values.
Data Byte n Value Byte
Data Byte n Action Byte
}
Data Byte 1 Value Byte
Data Byte 1 Action Byte
CAN ID4 Value Byte
CAN ID4 Action Byte
Source pointer for
Source pointer for
Source pointer for
Source pointer for
ID6 to ID0, r0
}
}
}
}
CAN ID3 Value Byte
CAN ID3 Action Byte
CAN ID2 Value Byte
CAN ID2 Action Byte
CAN ID1 Value Byte
CAN ID1 Action Byte
ID14 to ID7
ID20 to ID18, SRR, IDE, ID17 to ID15
ID28 to ID21
Type 3 Descriptor Header Byte
Type 3 Descriptor Block
HOLT INTEGRATED CIRCUITS
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HOLTIC [ HOLT INTEGRATED CIRCUITS ]
