ICS1893 datasheet(14/152 Pages) ICST

14 / 152 page

ICS1893 Rev C 6/6/00

June, 2000

Chapter 2

Conventions and Nomenclature

ICS1893 Data Sheet - Release

Signal references

• When referring to signals, the terms:

– ‘FALSE’, ‘low’, or ‘zero’represent signals that are logic zero.

– ‘TRUE’, ‘high’, or ‘one’represent signals that are logic one.

• Chapter 10, “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’,

‘active’,

‘asserted’,

The terms ‘set’, ‘active’, and ‘asserted’are synonymous.

They do not necessarily infer logic one.

(For example, an active-low signal can be set to logic zero.)

Terms:

‘cleared’,

‘de-asserted’,

‘inactive’

The terms ‘cleared’, ‘inactive’, and ‘de-asserted’are synonymous.

They do not necessarily infer logic zero.

Terms:

‘twisted-pair receiver’

In reference to the ICS1893, the term ‘Twisted-Pair Receiver’refers to the set

of Twisted-Pair Receive output pins (TP_RXP and TP_RXN).

Terms:

‘twisted-pair transmitter’

In reference to the ICS1893, the term ‘Twisted-Pair Transmitter’refers to the

set of Twisted-Pair Transmit output pins (TP_TXP and TP_TXN).

Table 2-1.

Conventions and Nomenclature (Continued)

Item

Convention / Nomenclature

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