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Vitesse Semiconductor
Vitesse Semiconductor

VSC9180 Datasheet Preview

VSC9180 Datasheet

Telecomm / Datacomm

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VSC9180 pdf
TIMESTREAM® PRODUCT FAMILY
VSC9180
VSC9180 Arapahoe - 2.5G SONET/SDH Backplane Transceiver
FEATURES:
Parallel to Serial Transmit
4Receives 16 or 4-Bit Parallel LVDS/LVPECL Inputs Operating
at 155MHz or 622MHz into Internal FIFO using Source
Synchronous Timing
416-Bit 155MHz Bus or 4-Bit 622MHz Bus is Bit Multiplexed
to Serial 2.5GHz Output
4Retimes Four Serial STS-12/STM-4 Inputs and Deskews up
to +/- 3 Bytes of Skew using the A1/A2 Boundaries
4Byte Interleaves Four Serial STS-12/STM-4 Inputs to Create
an STS-48 like Signal
4Clear Channel Non-SONET/SDH Capability and Support for
Both SONET/SDH and G.709 OTU1 Frames
Serial to Parallel Receive
4Dual 2.5Gb/s Frequency Synchronous Serial CML Inputs
with Onboard Clock and Data Recovery
4Onboard Frame Alignment of Received Signals and Large
Internal FIFO for Tolerance of up to +/-75ns of Serial
Backplane Skew
4Realignment of Incoming Signals Allows Hitless Selection of
Incoming Channel for Maintenance Purposes, and Prevents
Downstream Devices from Having to Reframe in a Failure
Condition
4Hardware Based Switch Over within Receipt of Two or Four Errored
Frame Boundaries
4Loss of Signal, Loss of Alignment, and Loss of Frame Alarm Indication
4Received Frame Pointer Output
4Programmable BER Threshold Monitors Based on B1 Parity Monitoring
of Both Serial Inputs
4Returns 16 or 4-Bit Parallel LVDS Bit De-multiplexed Outputs Operating
at 155MHz or 622MHz with Recovered Bus Clock (Non Interleave Mode)
4Returns Quad STS-12/STM-4 Outputs Operating at 622 Mb/s (Inter-
leave Mode)
4Clear Channel Non-SONET/SDH Capability and Support for Both
SONET/SDH and G.709 OTU1 Frames
Special Features
44-Bit or 16-Bit Parallel Bus Loopback with Output Bus Clock
4Parallel Loopback also Allows Quad STS-12/STM-4 Retime, Realign, and
Loopback Output
4Serial Loopback with Hitless Input Selection and Realignment
4Onboard Discrete CMU and CRU to Accommodate Non-synchronous
TX/RX Applications
PB-VSC9180-001



Vitesse Semiconductor
Vitesse Semiconductor

VSC9180 Datasheet Preview

VSC9180 Datasheet

Telecomm / Datacomm

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VSC9180 pdf
VSC9180
VSC9180 Arapahoe - 2.5G SONET/SDH Backplane Transceiver
GENERAL DESCRIPTION:
The VSC9180 is a multi-rate SONET/SDH
transceiver with support for working and
protection hitless backplane 1+1 protection.
It is designed to serialize four STS-12/STM-
4 signals, or byte interleaved SONET/SDH
data from 4-bit 622MHz or 16-bit 155MHz parallel buses onto
redundant 2.5Gb/s serial backplane outputs. It also receives two
synchronous and serial STS-48/STM-16 signals, recovers the
clock, deskews them and then allows hitless selection between
the two. Selection criteria can be derived from BER monitoring,
in-frame status or signal integrity monitoring. The selected
signal is deserialized to a 4-bit 622MHz bus, a 16-bit 155MHz bus
or quad STS-12’s operating at 622Mb/s.
VSC9180 BLOCK DIAGRAM:
The VSC9180 can serialize a 4-bit or 16-bit byte interleaved
STS-48/STM-16 bus to working and protection 2.5Gb/s I/O
(Non Interleave mode). Alternatively it can recover four serial
STS-12 backplane signals, re-align them, and interleave them
to form a serial STS-48 signal (Interleave mode). Interleave
mode allows the VSC9180 to be used to add 2.5Gb/s
backplane connectivity to the VSC9182 40G STS-1 TSI switch,
or act as a transponder between existing serial STS-48/STM-
16 signals to serial STS-12/STM-4 backplane architectures.
TOH transparency is preserved and B1 parity is intelligently
recalculated for compatibility with the backplane BER
monitoring of adjacent devices.
RXINA+/-
RXINB+/-
Dual
2.5GHz
CDR
DMX A1/A2
B Align
E Deinter-
DMX
R
leave
RXDATA[15:0]+/-
2:1
TXDATA[15:0]+/-
[3:0]
[15:0]
STS-12/STM-4
Phase Alignment
STS-48/STM-16
Interleaver
16-bit 155MHz
4-bit 622MHz
Retiming FIFO
[15:0]
[15:0]
2:1
CMU
MUX TXOUTA+/-
MUX TXOUTB+/-
VSC9180 ARCHITECTURES:
ASIC
VSC9180
4-bit
16-bit
Byte Interleaved
SONET/SDH Bus
W/P STS-48
2.5Gb/s I/O
TimeStream
VSC918X
VSC9180
W/P STS-48
2.5Gb/s I/O
4x
STS-12
TimeStream Backplane
TimeStream
VSC9182
40G TSI
VSC9180
64 x
STS-12
x16
TimeStream Backplane
STS-48
I/O
Your Partner for Success.
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
©2002 Vitesse Semiconductor Corporation
741 Calle Plano
Camarillo, CA 93012
Tel: 805.388.3700
Fax: 805.388.7565
www.vitesse.com


Part Number VSC9180
Description Telecomm / Datacomm
Maker Vitesse Semiconductor
Total Page 2 Pages
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