Rainbow Electronics DS3170 - Manual (Page 173)

DS3170 DS3/E3 Single-Chip Transceiver
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Register Name: TT.EIR
Register Description: Trail Trace Expected Identifier Register
Register Address: 0FEh
Bit
# 15 14 13 12 11 10 9 8
Name -- -- -- -- -- -- -- --
Default 0 0 0 0 0 0 0 0
Bit
# 7 6 5 4 3 2 1 0
Name ETD7 ETD6 ETD5 ETD4 ETD3 ETD2 ETD1 ETD0
Default
0 0 0 0 0 0 0 0
Bits 7 to 0: Expected Trail Trace Identifier Data (ETD[7:0]) – These eight bits are the expected trail trace
identifier data. The expected trail trace identifier address will be incremented whenever these bits are read or
written (when byte Fh is read or written, the address will return to 0h).