PM5380-BI PMC-Sierra, Inc., PM5380-BI Datasheet - Page 33
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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Document No.: PMC- 2010299, Issue 2
5
Application Examples
The PM5380 S/UNI-8x155 is applicable to equipment implementing Asynchronous Transfer
Mode (ATM) User-Network Interfaces (UNI), ATM Network-Network Interfaces (NNI), as well
as Packet over SONET/SDH (POS) interfaces. The POS interface can support several packet
based protocols, including the Point-to-Point Protocol (PPP).
The S/UNI-8x155 may find application at either end of switch-to-switch links or switch-to-
terminal links, both in public network (WAN) and private network (LAN) situations. The
S/UNI-8x155 provides a comprehensive feature set. The S/UNI-8x155 performs the mapping
of either ATM cells or POS frames into the SONET/SDH STS-3c/STM-1 synchronous payload
envelope (SPE) and processes applicable SONET/SDH section, line and path overheads for
eight channels.
In a typical STS-3c/STM-1 ATM application, the S/UNI-8x155 performs clock and data
recovery in the receive direction and clock synthesis in the transmit direction of the line
interface.
On the system side, the S/UNI-8x155 interfaces directly with ATM layer processors and
switching or adaptation functions using an UTOPIA Level 3 32-bit (clocked up to 104 MHz)
synchronous FIFO style interface.
An application with a UTOPIA Level 3 system side is shown in Figure 1. The initial
configuration and ongoing control and monitoring of the S/UNI-8x155 are normally provided
via a generic microprocessor interface.
S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Released
33
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