HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 637

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

SCFRDR Reading when Overrun Occurs: If a receive operation is continued despite the fact
that the receive FIFO data register (SCFRDR) contains 16 bytes of data, overrun will occur.
If SCFRDR is read in this state, the data that caused the overrun is read in the 17th read. The value
returned in the 18th and subsequent reads will be undefined.
Also note that, from the first SCFRDR read onward, the number of receive data bytes in SCFRDR
indicated by the lower 8 bits of the FIFO data count register (SCFDR) is one more than the actual
number of receive data bytes.
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