ICS1893CF datasheet(54/127 Pages) RENESAS

54 / 127 page

ICS1893CF, Rev. K, 05/13/10

May, 2010

Chapter 7 Management Register Set

ICS1893CF Data Sheet - Release

7.3.12 Jabber Detect (bit 1.1)

The purpose of this bit is to allow an STA to determine if the ICS1893CF detects a Jabber condition as

defined in the ISO/IEC specification.The ICS1893CF Jabber Detection function is controlled by the Jabber

Inhibit bit in the 10Base-T Operations register (bit 18.5). To detect a Jabber condition, first the ICS1893CF

Jabber Detection function must be enabled. When bit 18.5 is logic:

• Zero, the ICS1893CF disables Jabber Detection and sets the Jabber Detect bit to logic zero.

• One, the ICS1893CF enables Jabber Detection and sets the Jabber Detect bit to logic one upon

detection of a Jabber condition. When no Jabber condition is detected, the Jabber Detect bit is not

altered.

Note:

1. The Jabber Detect bit is accessible through both the Status register (as bit 1.1) and the QuickPoll

Detailed Status Register (as bit 17.2). A read of either register clears the Jabber Detect bit.

2. The Jabber Detect bit is a latching high (LH) bit. (For more information on latching high and latching low

bits, see Section 7.1.4.1, “Latching High Bits” and Section 7.1.4.2, “Latching Low Bits”.)

7.3.13 Extended Capability (bit 1.0)

The STA reads bit 1.0 to determine if the ICS1893CF has an extended register set. In the ICS1893CF this

bit is always logic one, indicating that it has extended registers.

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