ICS1893CY-10LFT IDT, Integrated Device Technology Inc, ICS1893CY-10LFT Datasheet - Page 43
ICS1893CY-10LFT
Manufacturer Part Number
ICS1893CY-10LFT
Description
PHYCEIVER LOW PWR 3.3V 64-TQFP
Manufacturer
IDT, Integrated Device Technology Inc
Series
PHYceiver™r
Type
PHY Transceiverr
Datasheet
1.ICS1893CY-10LFT.pdf
(143 pages)
Specifications of ICS1893CY-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
-
Other names
1893CY-10LFT
Available stocks
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Quantity
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Part Number:
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Manufacturer:
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6.3.2 PMA Sublayer
6.3.3 PCS/PMA Transmit Modules
6.3.3.1 PCS Transmit Module
6.3.3.2 PMA Transmit Module
ICS1893CY-10 Rev 1/07
The ICS1893CY-10 100Base-X PMA Sublayer consists of two interfaces: one to the Physical Coding
sublayer and the other to the Physical Medium Dependent sublayer. Functionally, the PMA sublayer is
responsible for the following:
•
•
•
•
•
Both the PCS and PMA sublayers have Transmit modules.
The ICS1893CY-10 PCS Transmit module accepts nibbles from the MAC/Repeater Interface and converts
the nibbles into 5-bit ‘code groups’ (referred to here as ‘symbols’). In addition, the PCS Transmit module
performs a parallel-to-serial conversion on the symbols, and subsequently passes the resulting serial bit
stream to the PMA sublayer.
The first 16 nibbles of each MAC/Repeater Frame represent the Frame Preamble. The PCS replaces the
first two nibbles of the Frame Preamble with the Start-of-Stream Delimiter (SSD), that is, the symbols /J/K/.
After receipt of the last Frame nibble, detected when TX_EN = FALSE, the PCS appends to the end of the
Frame an End-of-Stream Delimiter (ESD), that is, the symbols /T/R/. (The ICS1893CY-10 PCS does not
alter any other data included within the Frame.)
The PCS Transmit module also performs collision detection. In compliance with the ISO/IEC specification,
when the transmission and reception of data occur simultaneously and the ICS1893CY-10 is in:
•
•
The ICS1893CY-10 PMA Transmit module accepts a serial bit stream from its PCS and converts the data
into NRZI format. Subsequently, the PMA passes the NRZI bit stream to the Twisted-Pair Physical Medium
Dependent (TP-PMD) sublayer.
The ICS1893CY-10 PMA Transmit module uses a digital PLL to synthesize a transmit clock from the Clock
Reference Interface. When the ICS1893CY-10 is configured for an interface that is:
•
•
•
Note:
1. All of the TXCLK signals are derived from the REF_IN signal that goes to the digital PLL.
2. For the MII, for both the 10Base-T and 100Base-TX modes, the clock that is generated synchronizes
Link Monitoring
Carrier Detection
NRZI encoding/decoding
Transmit Clock Synthesis
Receive Clock Recovery
Half-duplex mode, the ICS1893CY-10 asserts the collision detection signal (COL).
Full-duplex mode, COL is always FALSE.
10M MII (that is, 10Base-T), the TXCLK signal is 2.5 MHz
10M Serial Interface, the TXCLK signal is 10 MHz
Either of the following, the TXCLK signal (a buffered version of the REF_IN signal) is 25 MHz:
– 100M MII (that is, 100Base-TX)
– 100M Symbol Interface
ICS1893CY-10 - Release
all data transfers across the MII.
Copyright © 2007, Integrated Device Technology, Inc.
All rights reserved.
43
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