Sundance Spas ST201 - Manual (Page 55)

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Sundance Technology ST201 PRELIMINARY draft 2
STATIONADDRESS
Class....................I/O Registers, Control and Status
Base Address ......IoBaseAddress register value
Address Offset .....0x47
Access Mode .......Read/Write
Width ...................8 bits
StationAddress is used to define the individual destination address that the ST201 will respond to when
receiving frames. Network addresses are generally specified in the form of 01:23:45:67:89:ab, where the
bytes are received left to right, and the bits within each byte are received right to left (Isb to msb). The
actual transmitted and received bits are in the order of 10000000 11000100 10100010 11100110
10010001 11010101.
The address comparison logic will compare the first 16 received destination address bits against Station-
Address(0), the second 16 received destination address bits against StationAddress(1), and the third 16
received destination address bits against StationAddress(2). The value set in the StationAddress register
is not inserted into the source address field of frames transmitted by the ST201. The source address field
for every frame must be specified by the host system as part of the frame data contents.
BIT BIT NAME BIT DESCRIPTION
15..0 StationAddress
Word0 The least significant word of the station, corresponding to address
0x54.
31..16 StationAddress
Word1 The second least significant word of the station, corresponding to
address 0x56.
47..32 StationAddress
Word2 The most significant word of the station, corresponding to address
0x58.