www.vitesse.com
Product
Brief
Dual Speed 10-bit Serializer/Deserializer
VSC7145
General Description
Features and Benefits
Dual Speed Operation:
- Fibre Channel: 1.06/2.12 Gb/s
- Gigabit Ethernet: 1.25 Gb/s
- InfiniBand
TM
: 2.5 Gb/s
10-bit, SSTL_2 or SSTL_3
Interface
HSPI Interface Compliant
ASIC-Friendly
TM
Timing to the
Transmitter
Separate Transmitter/Receiver
Rate Controls support Auto
Speed Negotiation
No Passives needed on High
Speed Signals
On-chip, 100 Ohm Termination
Write Pre-Emphasis in
Transmitter
Cable Equalization in Receiver
Analog/Digital Signal Detection
Flexible Reference Clock
Single 3.3V Supply, 800mW
64-pin, 14 mm PQFP Package
Pin Compatible to Agilent
HDMP-263x
The VSC7145 is a dual-speed Fibre
Channel, Gigabit Ethernet and
InfiniBand Serializer/Deserializer
(SerDes) optimized for performance
and power in an industry-standard
pinout. It accepts 10-bits of SSTL, 8B/
10B encoded transmit data, latches it
synchronously to the Transmit Byte
Clock (TBC) and serializes it onto the
SO differential output at a baud rate
which is 10, 20 or 40 times the
REFCLK frequency. The VSC7145
samples serial receive data on the SI
input, recovers the clock and data,
deserializes it onto a 10-bit SSTL bus
and outputs two recovered clocks at
1/10
th
or 1/20
th
of the baud rate. Both
disparities of the K28.5 characters are
detected and used for aligning the
serial data to the parallel output bus.
Independent speed selectors control
the transmitter and receiver separately
to support industry-standard auto-
matic speed negotiation protocols. A
combined analog/digital signal detect
circuit indicates the presence of valid
signal levels on the SI input. The
VSC7145 contains on-chip PLL
circuitry for synthesis of the bit rate
transmit clock, and extraction of the
clock from the received serial stream.
The parallel bus of the VSC7145 is
compliant with the High Speed Parallel
Interface (HSPI) standard developed
by the T11.2 Fibre Channel
Committee.
InfiniBand
TM/SM
is a trademark and service mark of the InfiniBand Trade Association
ASIC-Friendly
TM
is a trademark of Vitesse Semiconductor Corporation
Storage
Communication
Products
For more information on Vitesse Products visit the Vitesse web site
at
www.vitesse.com
or contact Vitesse Sales at
(800) VITESSE or
sales@vitesse.com
Copyright 2000 Vitesse Semiconductor Corporation
and the Vitesse logo are all registered trademarks
of Vitesse Semiconductor Corporation
www.vitesse.com
Product
Brief
Dual Speed 10-bit Serializer/Deserializer
VSC7145
Specifications
Data Rate: 1.0 - 2.5 Gb/s
REFCLK: 52.5 to 126 MHz
Frequency Offset: +/-200 ppm
Fast Locking: <300 data edges
Transmitter Output: 1.0V p-p
Minimum
Receiver Input: 200mV p-p
Minimum
3.3V +/- 5% Supply
0 - 70C Ambient Operation
Applications
Fibre Channel
-Host Adapters
-Hubs/Switches
-RAID systems
Gigabit Ethernet
-NICs
-Switches
-Proprietary Uplinks
InfiniBand
-Host Channel Adapters
-Target Channel Adapters
-Switches
Proprietary Serial Links
Storage
Communication
Products
VSC7145 Block Diagram
Dual Speed Auto Negotiation Fibre Channel Application
SI+
SI-
R(0:9)
COMDET
ENCDET
T(0:9)
SO+
SO-
EWRAP
RBC0
RBC1
REFCLK1
RX_LOS
TBC
TXRATE
RXRATE
RBCSYNC
REFCLK0
REFRATE
EQAMP
A
Q D
10
10
Q D
Q
D
D Q
D Q
0
1
TXC P1
TXCAP0
0.1uF
=
Serial to
Parallel
Parallel
to Serial
Clock
Multiplier
x10/x20/x40
Comma
Detect
Clock
Recovery
Signal
Detect
106.25 MHz
VSC7145
Optical
GBIC
OSCILLATOR
Protocol
Controller
1.06 / 2.12 Gb/s Link
SO+
SO-
T(0-9)
EN_CDET
EWRAP
R(0:9)
RBC0
RBC1
COMDET
REFRATE
SI +
SI -
0.1uF
TBC
TXRATE
RXRATE
RX_LOS
RBCSYNC
CAP0
CAP1
REFCLK
Product Options
VSC7145RU-30
VSC7145RU-31
VSC7145RU-34
Part Number
Low Speed I/O
Speed (Gb/s)
HS Termination
Compatibility
SSTL_2
SSTL_3
SSTL_2
1.05 - 1.26
(Half Speed)
or 2.10 - 2.52
(Full Speed)
100 Ohms
Agilent HDMP-2630
Agilent HDMP-2631
Agilent HDMP-2634
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