SBE HighWire HW400c/2 - Manual (Page 78)

HighWire HW400c/2 User Reference Guide Rev 1.0
D. Write the bytes to be written into the SPI Data Reg
4.2.24), beginning with LSB in SDR0.
isters (SDR0-7, see Section
E. Set the Write Byte Count Register (WBC, see Section 4.2.23) to the count of
bytes to write. This step initiates writing to the Ethernet switch.
The register will not be written if this count differs from the size of the Ethernet
switch register. There are no error flags to indicate this type of error.
F. Poll the SBSY flag until it equals “0”.
G. Check the SESR for any error flags. If no errors, the operation is complete.
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October 10, 2006 Copyright 2006, SBE, Inc. Page 66