1893Y-10LFT IDT, 1893Y-10LFT Datasheet - Page 102
1893Y-10LFT
Manufacturer Part Number
1893Y-10LFT
Description
Ethernet ICs 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER
Manufacturer
IDT
Datasheet
1.1893Y-10LFT.pdf
(152 pages)
Specifications of 1893Y-10LFT
Rohs
yes
Part # Aliases
ICS1893Y-10LFT
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8.14.5 Twisted Pair Tri-State Enable, TPTRI (bit 19.7)
8.14.6 ICS Reserved (bits 19.12:6)
8.14.7 Force LEDs On (bit 19.5)
8.14.8 ICS Reserved (bits 19.4:1)
8.14.9 Automatic 100Base-TX Power-Down (bit 19.0)
ICS1893 Rev C 6/6/00
The ICS1893 provides a Twisted Pair Tri-State Enable bit. This bit forces the TP_TXP and TP_TXN signals
to a high-impedance state. When this bit is set to logic:
•
•
See
Each ICS1893 provides a Force LEDs On bit as a diagnostic function. This bit overrides the normal
operation of the LEDs and forces them on. When this bit is set to logic:
•
•
Note:
See
The Automatic 100Base-TX Power Down bit provides an STA with the means of enabling the ICS1893 to
automatically shut down 100Base-TX support functions when 10Base-T operations are being used. When
this bit is set to logic:
•
•
Note:
Zero, the Twisted Pair Interface is operational.
One, the Twisted Pair Interface is tri-stated.
Zero, the normal operation of all ICS1893 LEDs is unaffected.
One, all ICS1893 LEDs forced on.
Zero, the 100Base-TX Transceiver does not power down automatically in 100Base-TX mode.
One, and the ICS1893 is operating in 10Base-T mode, the 100Base-TX Transceiver automatically turns
off to reduce the overall power consumption of the ICS1893.
ICS1893 Data Sheet - Release
Section 8.11.2, “ ICS Reserved (bits 16.14:11)”
Section 8.11.2, “ ICS Reserved (bits 16.14:11)”
The ‘ on’ state of the LEDs driven from multi-function configuration pins is determined after the pin
is sampled.
There are other means of powering down the 100Base-TX Transceiver (for example, when the
entire device is isolated using bit 0:10).
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
102
, the text for which also applies here.
, the text for which also applies here.
Chapter 8 Management Register Set
June, 2000
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