1893AFLFT IDT, 1893AFLFT Datasheet - Page 108
1893AFLFT
Manufacturer Part Number
1893AFLFT
Description
Ethernet ICs 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER
Manufacturer
IDT
Datasheet
1.1893AFLF.pdf
(136 pages)
Specifications of 1893AFLFT
Rohs
yes
Part # Aliases
ICS1893AFLFT
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ICS1893AF, Rev D 10/26/04
Table 9-8. MAC/Repeater Interface Pins: Media Independent Interface (MII) (Continued)
TXD0,
TXD1,
TXD2,
TXD3
TXEN
Name
Pin
ICS1893AF Data Sheet - Release
Number
Pin
39,
40,
41,
42
38
Type
Input
Input
Pin
Copyright © 2004, Integrated Circuit Systems, Inc.
Transmit Data 0–3.
Transmit Enable.
In MII mode:
•
•
•
•
TXD0 is the least-significant bit and TXD3 is the most-significant bit of
the MII transmit data nibble received from the MAC/repeater.
The ICS1893AF samples its TXEN signal to determine when data is
available for transmission. When TXEN is asserted, the signals on a
the TXD[3:0] pins are sampled synchronously on the rising edges of
the TXCLK signal.
The ICS1893AF samples its TXEN signal to determine when data is
available for transmission. When TXEN is asserted, the ICS1893AF
begins sampling the data nibbles on the transmit data lines TXD[3:0]
synchronously with TXCLK. The ICS1893AF then transmits this data
over the media.
Following the de-assertion of TXEN, the ICS1893AF terminates
transmission of nibbles over the media.
All rights reserved.
108
Chapter 9 Pin Diagram, Listings, and Descriptions
Pin Description
October, 2004
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