Ethernet Subsystem
Client Mapping into OTN and SONET/SDH
• Integrated IEEE 802.3 compliant Media Access Controllers
(MAC)
• Integrated 10 GE WAN Interface Sublayer (WIS) framing and
descrambling
• 4B/5B, 8B/10B and 64B/66B Physical Coding Sub-layer
(PCS) on a per-link basis for FE, GE and 10 GE respectively
• Lossless IEEE 802.3 local flow-control with integrated
packet buffers
• Maps a wide variety of protocols over OTN and SONET/SDH
• Encapsulates packet streams into ITU-T G.7041 GFP-F and
GFP-T, HDLC, LAPS and PPP
• Inserts and extracts GFP client management frames (CMF)
as well as LCP, NCP and BCP control frames
• OTN client mapping
•ꢀ Synchronous and asynchronous CBR mapping per
G.709
• Comprehensive per-port Ethernet statistics
• Frame delineation and generation with configurable IPG,
Preamble and CRC
• Transparent transmission of VLAN tagged Ethernet frames
• Frame sizes of 64 bytes to 9.6 Kbytes
• Dynamic programmable depth full-packet store-and-forward
buffers for burst tolerance and rate adaptation
• Transmit and receive of IEEE 802.3ah Link OAM, LACP and
Management VLAN messages
•ꢀ High-order (ODU-1) virtual and contiguous concatena-
tion performed according to G.709 with LCAS support
•ꢀ OPTM for efficient mapping/multiplexing of wander-
sensitive sub-ODU1 client data into OTN
•ꢀ GFP with extension headers for multiplexing of sub-
ODU1 client data streams into ODU-ks or OPTM
tributary slots
•ꢀ OPSA for rate encoding and adaptation of transparent
client data streams over OTN
• Firmware-based (MIPS4K CPU), hardware assisted G.8261
Synchronous Ethernet and IEEE 1588v2 PTP Ethernet timing
• On-chip central packet buffer
•ꢀ 10GE mapping into OTN compliant with ITU G.Sup43
6.1, 6.2, 7.1, 7.2 and 7.3 (FC-1200 also where appli-
cable)
•ꢀ SONET/SDH client mapping:
OTN Subsystem
•ꢀ High-order (STS-1-Xv/VC-3-xv & STS-3c-Xv/VC-4-Xv)
virtual and contiguous concatenation performed ac-
cording to ITU-T G.707 and ANSI T1.105
•ꢀ Up to 64 SONET/SDH virtual concatenation groups
(VCGs) supported
•ꢀ Hitless Link Capacity Adjustment Scheme (LCAS) ac-
cording to ITU-T G.7042
•ꢀ Up to 128 ms of differential delay between VCG members
• Compatible with ITU-T G.709, ITU-T G.798 and ITU-T G.975
• Flexible OTU, ODU, and OPU overhead/data processing
and frame alignment
• Transmit and receive facility and terminal loopback
configurations
• ODTU12 multiplexing and de-multiplexing for an ODU2 stream
• Up to six levels of Tandem Connection Monitoring (TCM)
• Independent performance counters for the accumulation of
BIP-8, BEI and other error conditions with optional interrupts
• O-E-O regeneration with adaptive clocking using Microchip's
OTN Phase Signaling Algorithm (OPSA)
System Expansion Interfaces
• SONET/SDH:
• 8 x 2.488 Gbit/s ESSI serial links with delay management
supporting slicing and de-slicing for byte, nibble, dibit, and
bit modes
Forward Error Correction (FEC)
• Two instantiations of independently-configurable Tri-FEC for
OTU2
• OTN
•ꢀ 8 x 2.488 Gbit/s CBRI serial links to mate device
•ꢀ 8 x 3.125 Gbit/s CBRI serial links to OTN cross-con-
nect
•ꢀ Interoperable G.709 RS (255, 239) FEC with 6.2 dB
coding gain at 10-15 BERout
•ꢀ Interoperable G.975.1 Annex I.4 Strong FEC (8.9 db
gain at BERout = 10-15@ 7% OH)
•ꢀ Enables grooming of ODUk using an off-the-shelf
packet fabric
•ꢀ Interoperable G.975.1 Annex I.7 Strong FEC (8.4 db
gain at BERout = 10-15 @ 7% OH)
Comprehensive statistics for use in EDC tuning, limited amplifier
tuning and performance monitoring
• Packet traffic
•ꢀ 1 Interlaken v1.1 interface configurable to 5 or 8 lanes
at 6.25 Gbit/s
•ꢀ 2 x XAUI interfaces (2 x 4 lanes at 3.125 GHz), ex-
tended XAUI mode can add format and flow-control
channelization extensions to 802.3ae
www.microchip.com