PM5380-BI PMC-Sierra, Inc., PM5380-BI Datasheet - Page 38
PM5380-BI
Manufacturer Part Number
PM5380-BI
Description
Network Interface, SATURN User Network Interface (8x155) Telecom Standard Product
Manufacturer
PMC-Sierra, Inc.
Datasheet
1.PM5380-BI.pdf
(440 pages)
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Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
When used to implement a Packet over SONET/SDH link, the S/UNI-8x155 inserts POS frames
into the SONET/SDH synchronous payload envelope. Packets to be transmitted are written into
a 2 Kbyte (256 bytes per channel) FIFO through a 32-bit SATURN POS-PHY Level 3 (clocked
up to 104 MHz) system side interface. POS frames are built by inserting the flags, control
escape characters and the FCS fields. Either the CRC-16.ISO-3309 or CRC-32 can be
computed and added to the frame. Several counters are provided for performance monitoring.
No line rate clocks are required directly by the S/UNI-8x155 as it synthesizes the transmit clock
and recovers the receive clock using a 77.76 MHz reference clock. The S/UNI-8x155 also
provides WAN Synchronization controllers that can be used to control an external VCXO in
order to fully meet Bellcore GR-253-CORE jitter, wander, holdover and stability requirements.
The S/UNI-8x155 also contains internal crossbar logic that allows the transmit streams to be
switched (crossbar) and/or bridged between channels at the SONET/SDH path level. As well,
the receive streams may be switched (crossbar) between channels at the SONET/SDH path
level. Two S/UNI-8x155 devices may exchange SONET/SDH path streams using the two
duplex 622.08 MHz serial APS links. Error detection and performance monitoring features are
provided for these serial APS links.
The S/UNI-8x155 is configured, controlled and monitored via a generic 8-bit microprocessor
bus interface. The S/UNI-8x155 also provides a standard 5 signal IEEE 1149.1 JTAG test port
for boundary scan board test purposes.
The S/UNI-8x155 is implemented in low power, 2.5/3.3 volt CMOS technology. It has 5.0 volt
TTL compatible digital inputs and outputs. High speed inputs and outputs support 3.3 volt and
5.0 volt compatible pseudo-ECL (PECL). The S/UNI-8x155 is packaged in a 520 pin SBGA
package.
S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Released
38
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