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The KAD/UAR/102 is used to parse (coherently extract specific bytes) and snarf (send all data to a FIFO) up to four RS-232/422/485 channels. The module is able to parse and snarf each channel at the same time.
The signal type (RS-232/422/485), bits per word and parity are programmable on a channel-by-channel basis. The bit rates must be binary multiples of each other.
In the parser, a total of up to 126 complete messages are triple buffered so that the stale indication is message-wide. Each message can be up to 512 characters (bytes) long (including start and stop characters). Each message is tagged to 0.1 ms resolution; a message is considered found when up to eight specific bytes are received.
The end of the message byte is determined by a user-defined stop character or a specific number of words. A message is not updated if any sequence is incorrect.
The snarfer stores all data from each bus in a separate FIFO 2K words deep.
Features
- Monitors up to four RS-422/485/232 busses
- Coherently parses traffic and tags for up to 125 messages from 4 to 512 bytes
- 2K words deep per channel (snarfer)
- Bit-rates from 300bps to 1,000,000 bps
- 7/8 bits per word with odd, even, or no parity
- Programmable start sequence (1 to 8 bytes), stop sequence (1 byte or by fixed length), and idle time
Applications
- Receiving data from GPS module or onboard computer
KAD/UAR/102