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Data validity (cont.), Glossary – Black Box MDR210A-485 User Manual

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Figure 2a – Generation of Data Packets





Data Validity (Cont.)






















To verify data integrity, a 16-bit cyclic redundancy check (CRC) is computed for the
transmitted data and attached to the end of each data packet before transmission. The
receiver will then compute the CRC on all incoming data. Any received data that has an
invalid CRC is discarded.


Glossary

Data Buffer – Collects incoming serial data prior to over-the-air data transmission. The
data buffer can hold up to 132 bytes at a given time.


Header


Data


CRC

No Data

To Idle Mode

Data from Buffer

Figure 2b – Transmit Mode Description

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