VITESSE VSC7226 Datasheet
Quad 10Gb/s Backplane Transceiver
Gigabit
Products
Features:
• Dual Speed Operation:
- Fibre Channel: 1.06/2.12 Gb/s
- Gigabit Ethernet: 1.25 Gb/s
- 10G Ethernet: 3.125 Gb/s
- InfiniBand
• Redundant XAUI Compliant
Serial Links
• Half-Rate Operation for
Compatibility with Legacy
1Gb/s Systems
• XGMII Compliant Parallel Data
Inputs/Outputs
TM
: 2.5 Gb/s
VSC7226
Product Brief
• Rate Matching Between Up-
stream/Downstream VSC7226’s
• Selectable High Speed Input
Termination
• 2 Channel or 4 Channel
Aggregation Capability
• Serial Output Swing Reduction
Control
• Parallel Data Squelching Option
• Transmitter Pre-Distortion and
Receiver Equalization
• Multiple Dual Data Rate (DDR)
Clocking Options
• Extensive Per-Channel
Configuration Control
Through MDIO Interface
• Internal Serial and Parallel
Loopback Modes
• JT AG and BIST Enabled
• Optional 8B/10B
Encoder/Decoder
General Description
The VSC7226-01 and
VSC7226-02 are quad channel parallel-to-serial and serial-to-parallel transceiver
chips designed for use in high
bandwidth data transmission
between busses, backplanes
and other subsystems. Each
channel’s transmitter section
contains parallel 8-bit or 10bit SSTL_2 input circuitry , an
8B/10B encoder, serializer
and a pair of serial PECL output drivers and additional
control inputs. Each
channel’s receiver section
contains a pair of PECL inputs, clock
and data recovery circuitry, a
deserializer, an 8B/10B decoder, elastic buffers, 8-bit or 10-bit SSTL_2 output drivers and additional control outputs. Each transmitter may be supplied
8-bit data which will encoded into 10-
T(7:0)
WSEN
KCHAR
R(7:0)
IDLE
KCH
ERR
8
C/D
TBC
8
VSC7226 Block Diagram
(Single Channel Shown)
PTXEN
DQ
Elastic
Buffer
8B/10B
Encode
PLL
Clock
Gen
RXCLK
10
TXCLK
8B/10B
Decode
bit characters for transmission, or may
be supplied pre-encoded 10-bit data in
which case the internal encoder is bypassed. The four channels may operate independently or in a synchronized
mode transferring data that is wordaligned across 16 or 32 data inputs
PTX+
PTX-
RTX+
RTX-
RTXEN
PSDET
10
Clock/
Data
Recover
RSDET
PRX+
PRX-
RRX+
RRX-
RRXSEL
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Quad 10Gb/s Backplane Transceiver
32
20G encoded duplex throughput
32
32
32
Backplane Backplane
Copper or
Fiber Media
VSC7226 VSC7226
Product Brief
Specifications:
• REFCLK: 24.5 - 312.5 MHz
• Tx/Rx REFCLK Offset: 200 ppm
• Serial Input Differential
T erminations Adjustable
Between 100Ω and 150Ω
• Fast Lock CRU: <300 Data
Transitions
• Up to 90 Bit Periods of
Inter-channel Deskew
• Tolerates +/- 10 Bit T imes of
Clock Drift Betweens
Resynchronizations
• 2.5V Supply
VSC7226
Gigabit
Products
VSC7226 Applicatons: Backplane
10GbE Parallel Optics Interface
Parallel Optics
@ 3.125Gb/s
• 2.1W Power Dissipation (Typ.)
• 21mm x 21mm, 256-pin
Thermally Enhanced Ball Grid
Array (TBGA)
• Maximum Case Temperature:
100°C
Applications:
• Backplane Interconnect for
Data Communications
Requiring 20 Gigabits Duplex
of Throughput
• Serial Bus Extension
• 10 Gigabit Ethernet XAUI
Transceiver
• InfiniBand
-Host Channel Adapters
-Target Channel Adapters
-Switches
MAC
XGMII
32 Bits @
156.25 MHz
Dual-edge
VSC7226
XAUI
4 x 3.125Gb/s
8b/10b
Laser
Drivers
Optics Module
LAN/WAN Serial Interface
XAUI
(HARI)
MAC
XGMII
32 Bits @
156.25MHz
Dual-edge
Clocking
VSC7226
Serial Data Transfer Rates for Each Channel
Full Rate Mode
■ VSC7226-01
■ VSC7226-02
■ 2.4–3.125 Gb/s
■ 1.9–2.4 Gb/s
LAN/WAN
Interface
Chip
Optics
16 Bits @
622 MHz
SerDes
Half Rate Mode
■ 1.2 –1.56 Gb/s
■ 0.95 –1.2 Gb/s
OPTICS
9.95Gb/s
Serial Data
OC-192
Compatible
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InfiniBand
TM/SM
is a trademark and service mark of the InfiniBand Trade Association
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
of Vitesse Semiconductor Corporation
are all registered trademarks
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