VITESSE VSC7216-02 Datasheet
Low Power Quad 1.25Gb/s
Backplane Transceiver
Serial
Interconnect
Products
Features:
• Compatible to Industry
Standard VSC7216-01
• Redundant Transmit and
Receive
Serial I/O’s
• L VTTL Parallel Data I/O
• Rate Matching Between
Upstream/Downstream
VSC7216-02’s
VSC7216-02
Product Brief
• Selectable High Speed Input
Termination
• Multi-channel and Multi-chip
Aggregation Capability
• Serial Output Swing Reduction
Control
• Transmitter Pre-Distortion and
Receiver Equalization
• Multiple Clocking Options
• Internal Serial and Parallel
Loopback Modes
• JT AG and BIST Enabled
• Optional 8B/10B
Encoder/Decoder
• Fast Lock for use in Asynchro-
nous Switching Applications
• Adjustable Latency and
Deskewing for V aried System
Environments
• Analog Signal Detect for each
PECL Input
General Description
The VSC7216-02 is a quad
channel parallel-to-serial and
serial-to-parallel transceiver
chip designed for use in high
bandwidth data transmission
between busses, backplanes
and other subsystems. Each
channel’s transmitter section
contains parallel 8-bit or 10-bit
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
output drivers and additional control
outputs. Each transmitter may be supplied 8-bit data which will be encoded
into 10-bit characters for transmission,
or may be supplied pre-encoded 10-bit
T(7:0)
WSEN
KCHAR
R(7:0)
IDLE
KCH
ERR
TBC
VSC7216-02 Block Diagram
(Single Channel Shown)
8
DQ
C/D
8
Elastic
Buffer
8B/10B
Encode
PLL
Clock
Gen
RXCLK
TXCLK
8B/10B
Decode
PTXEN
10
PTX+
PTX-
RTX+
RTX-
RTXEN
10
Clock/
Data
Recover
data in which case the internal encoder is bypassed. The four channels may operate independently or
in a synchronized mode transferring
data that is word-aligned across 16
or 32 data inputs.
PSDET
RSDET
RRXSEL
PRX+
PRX-
RRX+
RRX-
www.vitesse.com
Datacom Division
VSC7216-02
Backplane
Backplane Backplane
Across a Backplane...
Between Backplanes...
Multi-Gigabit
Interconnect
VSC7216-02
Multi-Gigabit
Interconnect
VSC7216-02
Multi-Gigabit
Interconnect
VSC7216-02
Multi-Gigabit
Interconnect
VSC7216-02
Low Power Quad 1.25Gb/s
Backplane Transceiver
Product Brief
Specifications:
• REFCLK: 24.5 - 136 MHz
• Tx/Rx REFCLK Offset: 200 ppm
• Serial Input Differential
T erminations Adjustable
Between 100Ω and 150Ω
• Fast Lock CRU: <128 Data
Transitions
• Up to 90 Bit Periods of
Inter-channel Deskew
• Tolerates +/- 5 Bit Times of
Clock Drift Betweens
Resynchronizations
Serial
Interconnect
Products
VSC7216-02 Two Applications
• 2.5V Supply , Internal 1.8V
Regulator
• 700 mW Power Dissipation
• 21 x 21mm, or 27 x 27mm
256-pin Thermally Enhanced
Ball Grid Array (TBGA)
• Maximum Case Temperature:
110°C
Applications:
• Backplane Interconnect for
Data Communications
• Serial Bus Extension
• Gigabit Ethernet T ransceiver
• Fibre Channel T ransceiver
• Serial Link Redundancy
Connection to Vitesse’s Crosspoint Products
Serial Data Transfer Rates for Each Channel
VSC7216-02
VSC7216-02
VSC7216-02
VSC7216-02
VSC837
CROSSPOINT
SWITCH
Full Rate Mode
0.98 – 1.36 Gb/s
VSC7216-02
VSC7216-02
VSC7216-02
Half Rate Mode
0.49 – 0.68 Gb/s
www.vitesse.com
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 Corp;oration
are all registered trademarks
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