ICS1893Y-10LFT IDT, Integrated Device Technology Inc, ICS1893Y-10LFT Datasheet - Page 65
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ICS1893Y-10LFT
Manufacturer Part Number
ICS1893Y-10LFT
Description
PHYCEIVER LOW PWR 3.3V 64-TQFP
Manufacturer
IDT, Integrated Device Technology Inc
Series
PHYceiver™r
Type
PHY Transceiverr
Specifications of ICS1893Y-10LFT
Protocol
MII
Voltage - Supply
3.14 V ~ 3.47 V
Mounting Type
Surface Mount
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Drivers/receivers
-
Lead Free Status / RoHS Status
Compliant, Lead free / RoHS Compliant
Other names
1893Y-10LFT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ICS1893Y-10LFT
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
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8.2.5 Low Power Mode (bit 0.11)
8.2.6 Isolate (bit 0.10)
8.2.7 Restart Auto-Negotiation (bit 0.9)
ICS1893 Rev C 6/6/00
This bit provides one way to control the ICS1893 low-power mode function. When bit 0.11 is logic:
•
•
Note:
This bit controls the ICS1893 Isolate function. When bit 0.10 is logic:
•
•
The default value for bit 0.10 depends upon the PHY address of
•
•
This bit allows an STA to restart the auto-negotiation process in Software mode (that is, the HW/SW pin is
logic one). When bit 0.12 is logic:
•
•
Zero, there is no impact to ICS1893 operations.
One, the ICS1893 enters the low-power mode. In this case, the ICS1893 disables all internal functions
and drives all MAC/repeater output pins low except for those that support the MII Serial Management
Port. In addition, the ICS1893 internally activates the TPTRI function to tri-state the signals on the
Twisted-Pair Transmit pins (TP_TXP and TP_TXN) and achieve additional power savings.
Zero, there is no impact to ICS1893 operations.
One, the ICS1893 electrically isolates its data paths from the MAC/Repeater Interface. The ICS1893
places all MAC/repeater output signals (TXCLK, RXCLK, RXDV, RXER, RXD[3:0], COL, and CRS) in a
high-impedance state and it isolates all MAC/repeater input signals (TXD[3:0], TXEN, and TXER). In this
mode, the Serial Management Interface continues to operate normally (that is, bit 0.10 does not affect
the Management Interface).
Is equal to 00000b, then the default value of bit 0.10 is logic one, and the ICS1893 isolates itself from the
MAC/Repeater Interface.
Is not equal to 00000b, then the default value of bit 0.10 is logic zero, and the ICS1893 does not isolate
its MAC/Repeater Interface.
Zero, the Auto-Negotiation sublayer is disabled, and the ICS1893 isolates any attempt by the STA to set
bit 0.9 to logic one.
One (as set by an STA), the ICS1893 restarts the auto-negotiation process. Once the auto-negotiation
process begins, the ICS1893 automatically sets this bit to logic zero, thereby providing the self-clearing
feature.
ICS1893 - Release
There are two ways the ICS1893 can enter low-power mode. When entering low-power mode:
•
•
By setting bit 0.11 to logic one, the ICS1893 maintains the value of all Management Register bits
except the latching high (LH) and latching low (LL) status bits, which are re-initialized to their
default values instead. (For more information on latching high and latching low bits, see
8.1.4.1, “ Latching High Bits”
During a reset, the ICS1893 sets all management register bits to their default values.
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
and
Section 8.1.4.2, “ Latching Low Bits”
65
Table
8-16. If the PHY address:
Chapter 8 Management Register Set
.)
June, 2000
Section
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