ICS1893BFILFT IDT, Integrated Device Technology Inc, ICS1893BFILFT Datasheet - Page 92
![PHYCEIVER LOW PWR 3.3V 48-SSOP](/photos/31/26/312666/57648ssop_sml.jpg)
ICS1893BFILFT
Manufacturer Part Number
ICS1893BFILFT
Description
PHYCEIVER LOW PWR 3.3V 48-SSOP
Manufacturer
IDT, Integrated Device Technology Inc
Series
PHYceiver™r
Type
PHY Transceiverr
Specifications of ICS1893BFILFT
Protocol
MII
Voltage - Supply
3.14 V ~ 3.47 V
Mounting Type
Surface Mount
Package / Case
48-SSOP
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
1893BFILFT
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8.2.1 Transformer Interface Pins
8.2.2 Multi-Function (Multiplexed) Pins: PHY Address and LED Pins
ICS1893BF, Rev. E, 8/11/09
Table 8-3. ICS1893BF Configuration Pins
Transformer connections on the ICS1893BF signals TP_AP, TP_AN, TP_BP and TP_BN are shown in
Table 8.4. The previous TP_CT pin on the ICS1893AF is not used with the ICS1893BF. The typical Twisted
Pair Transformers connections are shown in Chapter 5. The transformer must be 1:1 ratio and symetrical
for 10/100 MDI/MDIX applications since the transmit twisted pair and receive twisted pair are
interchangeable. ICS1893 PHYs do not have power connections to the transformer. All transformer power
is supplied by the ICS1893. Note the twisted pair are polarity sensitive and must connect to the RJ45 with
the same polarity as shown in the figure.
Table 8-4
Table 8-4. ICS1893BF Transformer Interface Pins
Table 8-5
Note:
1. During either a power-on reset or a hardware reset, each multi-function configuration pin is an input
2. A software reset does not affect the state of a multi-function configuration pin. During a software reset,
3. Each multi-function configuration pin must be pulled either up or down with a resistor to establish the
4. As outputs, the asserted state of a multi-function configuration pin is the inverse of the sense sampled
TP_AP
TP_AN
TP_BP
TP_BN
Signal Name
that is sampled when the ICS1893BF exits the reset state. After sampling is complete, these pins are
output pins that can drive status LEDs.
all multi-function configuration pins are outputs.
address of the ICS1893BF. LEDs placed in series with these resistors provide a designated status
indicator.
Caution:
during reset. This inversion provides a signal that can illuminate an LED during an asserted state. For
example, if a multi-function configuration pin is pulled down to ground through an LED and a
current-limiting resistor, then the sampled sense of the input is low. To illuminate an LED for the
asserted state requires the output to be high.
ICS1893BF Data Sheet - Release
Signal Name
REF_OUT
RESETn
REF_IN
lists the pins for the multi-function group of pins (that is, the multiplexed PHY Address / LED pins).
lists the pins for the transformer interface group of pins.
All pins listed in
Pin No.
12
13
16
15
Pin No.
47
46
23
Table 8-5
Twisted Pair A Positive
Twisted Pair A Negative
Twisted Pair B Positive
Twisted Pair B Negative
Copyright © 2009, IDT, Inc.
Frequency Reference Input: 25 MHz Input Clock or Crystal
Frequency Reference Output for Crystal
System Reset (active low)
All rights reserved.
must not float.
92
Chapter 8 Pin Diagram, Listings, and Descriptions
Signal Description
Signal Description
August, 2009
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