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DS92UT16TUF Datasheet

  • DS92UT16TUF

  • UTOPIA-LVDS Bridge for 1.6 Gbps Bi-directional Data Transfer...

  • 86頁

  • NSC

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DS92UT16TUF UTOPIA-LVDS Bridge for 1.6 Gbps Bi-directional Data Transfers
February 2004
DS92UT16TUF
UTOPIA-LVDS Bridge for 1.6 Gbps Bi-directional Data
Transfers
1.0 General Description
The DS92UT16 is a flexible UTOPIA to LVDS Bridge device.
The LVDS Bridge transparently transports the UTOPIA bus
over a high speed LVDS serial link. The device includes
many reliability features such as an optional 1:1 protection
and built in bit error rate checking.
The parallel interface is user programmable for maximum
flexibility. The user can choose between UTOPIA Level Level
2 ATM layer (master) of PHY layer (slave). The UTOPIA-
LVDS Bridge supports a special MPHY (multi-PHY layer)
operation mode. The MPHY operation supports up to 248
standard UTOPIA Level 2 PHY ports without adding external
circuitry.
The serial interface uses LVDS Serializer and Deserializer
technology. The 16:1 bit serialization allows conveying the
full-duplex parallel bus over two differential transmission
pairs. This enables low cost backplanes and cables. Cable
transmission length can be as long 16 meters.
The serial link carries Flow control information (back pres-
sure) in both directions. The Bridge device applies back
pressure on a per queue basis over the 31 internal FIFO
queues. In addition, the serial link includes an OAM (Opera-
tions and Maintenance) channel that does not detract from
link performance.
There are many applications where the UTOPIA-LVDS
Bridge simplifies designs. Box-to-box connections can use
DS29UT16 devices across cables. Access multiplexor appli-
cations can use the devices across a PCB backplane for
point-to-point and lightly loaded multidrop configurations.
鈥?Two independent LVDS receiver serial ports for
optional 1:1 protection
鈥?Main and redundant LVDS transmit ports
鈥?Loop timing capability enables LVDS recovered clock
to internally drive LVDS transmit clock
鈥?Internal buffers allow maximum LVDS serial bit rate
independent of UTOPIA clock rate
Programmable UTOPIA interface
鈥?UTOPIA Level 2 up to 52 MHz
鈥?ATM layer or PHY layer interface
鈥?ATM layer interface can support up to 248 standard
Level 2 PHY ports with no additional external
circuitry. Configured as 31 MPHY鈥檚, each with up to 8
sub-ports
鈥?Supports extended cell size up to 64 bytes
鈥?Supports 16- or 8-bit data buses with parity
Embedded bidirectional, non-blocking flow control over
serial link for per MPHY back pressure
No external memories required
Embedded OAM channel over serial link
鈥?Remote Alarm/Status Indications
鈥?Link Trace Label
鈥?Embedded Control Channel with flow control for
software communication
鈥?BIP16 based error performance monitoring
鈥?In protected systems, the standby link OAM channel
is available for embedded communications and
performance/alarm monitoring
Multiple loop-back options
Standard microprocessor interface (Intel and Motorola
compatible)
IEEE 1149.1 JTAG port
Temperature range: 鈭?0藲C to +85藲C
CMOS technology for low power
LVDS transceiver section uses 3.3V power supply.
Digital UTOPIA section uses 2.5V power supply. All I/O
are 3.3V tolerant.
196 LBGA package, 15x15x1.37 mm, 1.0 mm ball pitch
n
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2.0 Features
n
832 Mbps LVDS 16-bit serializer and deserializer
interface
鈥?Suitable for cable, printed circuit board, and
backplane transmission paths
鈥?10m cable at max LVDS data rate and greater than
16m at min LVDS data rate
鈥?Embedded clock with random data lock capability for
clock recovery
鈥?PRBS (x
31
+ x
28
+ 1) based LVDS link BER test
facility
n
3.0 Ordering Information
Order Number
DS92UT16TUF
Package Information
196 LBGA package, 15x15x1.37 mm, 1.0 mm ball pitch
Package Number
NUJB0196
漏 2004 National Semiconductor Corporation
DS200316
www.national.com

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