Echelon I/O Model Reference for Smart Transceivers and Neuron Chips - Manual (Page 79)

I/O Model Reference 69
Table 26. Slave Writes Buffer to Master: R/W~=1
Step Master Slave Comment
1 (Owns Token)
2 Write XFER Slave has data to write (XFER=0x01)
3 Read XFER
4 Write (length) Length=number of bytes of data
5 Read (length)
6 Write (data_0) Salve begins data transfer to master
7 Read (data_0)
8 Repeat steps 6 and 7 length times
9 Write (data_n) Last byte of data to be transferred
10 Read (data_n)
11 Write EOM End of data transfer (EOM=0x00)
12 Process EOM Exchange token
13 (Owns Token)
Table 27. Master Passes Token to Slave
Step Master Slave Comment
1 (Owns Token)
2 Write NULL Master has no data to send to slave
3 Read NULL NULL=0x00
4 Write EOM End of data transfer (EOM=0x00)
5 Process EOM Exchange token
6 (Owns Token)