IDT77V106L25 Datasheet, PDF (1/27 Pages) Integrated Device Technology – 3.3V ATM PHY for 25.6 and 51.2 Mbps

3.3V ATM PHY
for 25.6 and 51.2 Mbps
IDT77V106L25
FEATURES:
• Performs the PHY-Transmission Convergence (TC) and
Physical Media Dependent (PMD) Sublayer functions of the
Physical Layer
• Compliant to ATM Forum (af-phy-040.000) and ITU-T I.432.5
specifications for 25.6Mbps physical interface
• Also operates at 51.2Mbps data rate
• 8-bit UTOPIA Level 1 Interface
• 3-Cell Transmit & Receive FIFOs
• Receiver Auto-Synchronization and Good Signal Indication
• LED Interface for status signalling
• Supports UTP Category 3 and 5 physical media
• Interfaces to standard magnetics
• Low-Power CMOS
• 3.3V supply with 5V tolerant inputs
• 64-lead TQFP Package (10 x 10 mm)
• Commercial and Industrial Temperature Ranges
DESCRIPTION:
The IDT77V106L25 is a member of IDT’s family of products supporting
Asynchronous Transfer Mode (ATM) data communications and networking.
The IDT77V106L25 implements the physical layer for 25.6 Mbps ATM,
connecting a serial copper link (UTP Category 3 and 5) to an ATM layer device
such as a SAR or a switch ASIC. The IDT77V106L25 also operates at 51.2
Mbps and is well suited to back-plane driving applications. The 77V106L25
utilizes an 8-bit UTOPIA interface on the cell side.
The IDT77V106L25 is fabricated using IDT’s state-of-the-art CMOS
technology, providing the highest levels of integration, performance and
reliability, with the low-power consumption characteristics of CMOS.
APPLICATIONS:
• Up to 51.2Mbps backplane transmission
• Rack-to-rack short links
• ATM Switches
BLOCK DIAGRAM
TXREF
TXCLK
TXDATA ⁹
TXSOC
TXEN
TXCLAV
3 CELL FIFO
ALE
WR
RD
CS
AD[7:0] ⁸
INT
RESET
UTILITY
BUS
CONTROLLER
RXCLK
RXDATA ⁹
RXSOC
RXEN
RXCLAV
RXREF
3 CELL FIFO
TXLED
SCRAMBLER
PRNG
4B/5B
ENCODER
P/S
NRZI
Line
Driver
TXD+
TXD-
RESET
LOOP BACK
DESCRAMBLER
5B/4B
DECODER
S/P
DNRZI
RxLED
77V106
CLK
REC
Line
RXVR
RXD+
RXD-
OSC
77v106 drw 01
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
1
 2003 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice
JULY 2003
DSC-5360/3