VSC7166 Datasheet, PDF (2/2 Pages) Vitesse Semiconductor Corporation – OC-192 Very Short Reach (VSR) Converter IC

VSC7166
OC-192 Very Short Reach (VSR) Converter IC
GENERAL DESCRIPTIONS
The VSC7166 is used to interface between
OC-192 Framers and Parallel Optical
Modules. In the Serializer, 16-bit OC-192 data
from the Framer is mapped and encoded
onto twelve 1.244 Gb/s, 8b/10b outputs, with 1
of the twelve outputs being used for XOR protection and another
of the twelve for EDC. In the Deserializer, the twelve 1.244 Gb/s
inputs are decoded and remapped to SFI-4 OC-192 data for
the Framer. The redundant channel permits data to be
reconstructed in the deserializer even if a channel fails. The 16-
bit 622 MHz signals and the 12 1.244 Gb/s interfaces both utilize
LVDS signaling. These devices are intended for high-speed
Router-to-Router and DWDM/Sonet Terminal-to-Router
connections.
The VSC7166 is designed to conform to the Optical Inter-
networking Forum’s (OIF) OIF-VSR4-01.0 Implementation
Agreement.
Expanding use of the Internet has caused very high volumes of
data traffic to become concentrated at places such as central
offices (CO’s), points of presence (POP) and portal sites. At
these sites many pieces of equipment such as high-speed
routers, Dense Wavelength Division Multiplexing (DWDM)
equipment and Add/Drop Multiplexors (ADM) are located in
close proximity (co-located) and must be connected by
extremely high throughput data links. At the core of the network
such high volume data traffic is efficiently handled using
Synchronous Optical Network (SONET) links. To date, these
links have been optimized for long haul transmission where the
high cost of traditional lasers has not been a factor. For short
reach links between co-located equipment it is highly desirable
to use much less expensive arrays of Vertical Cavity Surface
Emitting Lasers (VCSEL’s). An integrated circuit is necessary to
form the interface between the traditional SONET network and
VCSEL based optical modules and the VSC7166 fulfills this role.
SPECIFICATIONS:
VSC7166 BLOCK DIAGRAM
Ten 1.244Gb/s Data Channels
Aggregate 10Gb/s Data Throughput
Clock Frequency Tolerance: +/-200 ppm
1.8V and 2.5V Power Supplies
16
DIP/N(15:0)
Framer and
Byte Clock
80
XOR
EDC
To Transit
Optics
8
120
12
8B/10B
Enclode
1.24Gb/s
Tranceivers Tx
ON/P(11:0)
8
Up to 80ns Inter-channel Deskewing
2.0W Power Dissipation (Typical)
27mm x 27mm, 256-pin Thermally Enhanced Ball Grid Array (TBGA)
16
OP/N(15:0)
Byte Mux
CRC Check ⁹⁶
Protection
Switching
PRBS Check
Transmitter
Receiver
96
Alignment
Buffer
120
8B/10B
Decode &
LOSyn
1.24Gb/s
Tranceivers Rx
IN/P(11:0)
JTAG
Boundary Scan
Processor
PF
Interface Block
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or [e-mail]
©2002 Vitesse Semiconductor Corporation
741 Calle Plano
Camarillo, CA 93012
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