S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Released
Sꢀ Performs byte stuffing for transparency processing.
Sꢀ Performs frame check sequence generation using the CRC-16.ISO-3309 and CRC-32
polynomials.
Sꢀ Aborts packets under the direction of the host or when the FIFO underflows.
Sꢀ Provides a SATURN POS-PHY Level 3 compliant 32-bit wide datapath (clocked up to 104
MHz) with parity support to an internal 2Kbyte FIFO buffer (256 bytes per channel).
2.8 The APS/Crossbar Support
Sꢀ Allows the two channels to be switched (crossbar) and/or bridged channels on the transmit
direction at the SONET/SDH path level.
Sꢀ With one S/UNI-8x155 device, supports up to four 1+1 APS interface or a single 1:4 APS
interface. Supports channel aliasing at the path level.
Sꢀ With two S/UNI-8x155 devices, supports up to eight 1+1 APS interfaces or a various 1:N
APS interfaces up to a single 1:8 APS interface.
Sꢀ Allows the eight channels to be switched (crossbar) on the receive direction at the
SONET/SDH path level.
Sꢀ Provides two transmit differential PECL bit-serial interfaces at 622.08 Mbit/s to switched
receive channels (crossbar) or source transmit channels (bridge) with a second S/UNI-
8x155 device at the SONET/SDH path level.
Sꢀ Provides two receive differential PECL bit-serial interface at 622.08 Mbit/s to switch
receive channels (crossbar) or source transmit channels (bridge) with a second S/UNI-
8x155 device at the SONET/SDH path level.
Sꢀ Provides performance monitoring of bit errors across the two receive streams.
2.9
Device Interworking
Other PMC-Sierra devices that implement the POS-PHY Level 3 interface include:
Sꢀ S/UNI 2488: SATURN User Network Interface for 2488 Mbit/s
Sꢀ S/UNI 4x622: Quad Channel OC-12c ATM and POS
Sꢀ S/UNI 16x155: Sixteen Channel OC-3c ATM and POS
Sꢀ S/UNI 2xGE: Dual Gigabit Ethernet Controller
Sꢀ S/UNI MACH48: Multi-Service Access Device for Channelized Interfaces
Sꢀ S/UNI ATLAS-3200 - 2.488G ATM Layer Solution
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
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PMC [ PMC-SIERRA, INC ]
