ICS1893BF Data Sheet Rev. E - Release
Chapter 2 Conventions and Nomenclature
Table 2-1. Conventions and Nomenclature (Continued)
Item
Convention / Nomenclature
• When referring to signals, the terms:
Signal references
– ‘FALSE’, ‘low’, or ‘zero’ represent signals that are logic zero.
– ‘TRUE’, ‘high’, or ‘one’ represent signals that are logic one.
• Chapter 9, “DC and AC Operating Conditions” defines the electrical
specifications for ‘logic zero’ and ‘logic one’ signals.
Symbols
• In this data sheet, code group names are referred to as ‘symbols’ and they
are shown between '/' (slashes). For example, the symbol /J/ represents
the first half of the Start-of-Stream Delimiter (SSD1).
• Symbol sequences are shown in succession. For example, /I/J/K/
represents an IDLE followed by the SSD.
Terms:
‘set’,
The terms ‘set’, ‘active’, and ‘asserted’ are synonymous.
They do not necessarily infer logic one.
‘active’,
‘asserted’,
(For example, an active-low signal can be set to logic zero.)
Terms:
The terms ‘cleared’, ‘inactive’, and ‘de-asserted’ are synonymous.
They do not necessarily infer logic zero.
‘cleared’,
‘de-asserted’,
‘inactive’
Terms:
‘twisted-pair receiver’
In reference to the ICS1893BF, the term ‘Twisted-Pair Receiver’ refers to the
set of Twisted-Pair Receive output pins (TP_RXP and TP_RXN).
Terms:
In reference to the ICS1893BF, the term ‘Twisted-Pair Transmitter’ refers to
‘twisted-pair transmitter’ the set of Twisted-Pair Transmit output pins (TP_TXP and TP_TXN).
ICS1893BF, Rev. E, 8/11/09
August, 2009
Copyright © 2009, IDT, Inc.
All rights reserved.
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