CS19205CBI Datasheet, PDF (2/3 Pages) Applied Micro Circuits Corporation – 10 Gigabit Ethernet MAC and PHY/OC-192c POS Framer/Mapper

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10 Gigabit Ethernet MAC and PHY/OC-192c POS Framer/Mapper
Overview and Applications
The S19205 is a dense VLSI device that integrates a 10GbE MAC,
a 64B/66B Physical Coding Sublayer (PCS) and a WAN Interface
Sublayer (WIS) as baselined by the IEEE P802.3ae task force.
Optionally, it can be configured to perform full-duplex mapping of
packets into SONET/SDH payloads at OC-192c rate (POS). When
configured for SONET/SDH operation, the S19205 supports Auto-
matic Protection Switching (APS) as required in carrier-class equip-
ment.
SONET/SDH Processing (WIS)
The S19205 implements SONET/SDH processing functions for a
single STS-192/STM-64 data stream. The S19205 performs full sec-
tion, line, and path overhead processing of all defined TOH/POH
bytes, including framing, scrambling/descrambling, alarm signal
(AIS) insertion/detection, remote failure insertion/detection (REI/
RDI), section/path trace insertion/capture (J0/J1) and bit interleaved
parity (B1/B2/B3) processing. The S19205 provides programmable
Signal Fail (SF) and Signal Degrade (SD) thresholds for B2 and B3
monitoring.
The S19205 is SONET and SDH standards compliant with Telcordia
GR-253, GR-499 and GR-1377, and ANSI T1. 105-1995, and ITU
G.707 and G.783.
POS HDLC Processing
The S19205 can be configured for HDLC processing for STS-192c/
AU-4-64c POS applications. When configured for POS HDLC pro-
cessing, the S19205’s transmit HDLC processor will provide the
insertion of HDLC framed packets into the STS SPE. It will perform
packet framing, provide interframe fill and TX FIFO error recovery.
In addition, it optionally performs payload scrambling (x⁴³ + 1), per-
forms transparency processing as required by RFC 2615 and will
optionally generate a 32 bit CRC.
The receive HDLC processor provides for the extraction of HDLC
frames, transparency removal, de-scrambling (if enabled), FCS
error checking and optionally deletes the HDLC address and control
fields. The S19205 also provides a robust set of counters and sta-
tus/control registers for performance monitoring via the micropro-
cessor.
It is SONET/SDH standards compliant IETF RFC 1662 and RFC
2615.
10 Gigabit Ethernet MAC Processing
The 10GbE Medium Access Control block supports full-duplex traf-
fic at 10Gbps rates. In the transmit direction, it performs encapsula-
tion of packets received through the system interface into Ethernet
frames. It provides pad insertion to insure a minimum frame length,
as well as CRC generation. The MAC processing block also pro-
vides for preamble, SFD and IFG generation.
In the receive direction, the MAC processing consists of Ethernet
framing and CRC validation, as well as monitoring of the size of the
received frame.
Product Brief
Part Number S19205CBI, Revision 1.4, October 2002
The MAC block also integrates an extensive set of counters for net-
work statistics collection in support of RMON and IETF standard
MIBs.
The MAC supports flow control for both serial LAN (10Gbps) or
WAN (9.95Gbps) applications through the 802.3x MAC ‘PAUSE’
functionality.
64B/66B Encoder / Decoder
When configured for Ethernet operation, the PCS sublayer performs
frame scrambling and bit ordering before passing data to the WAN
Interface Sublayer or to the XSBI interface. 64B/66B block coding is
used to guarantee run length, transition density and DC balance of
the serial data stream. Data frames are delineated using “01” sync
header. Control frames are identified with a “10” sync header.
Line-side Interface
In 10GbE WAN PHY and OC-192c POS mode, the line-side inter-
face supports a 16-bit parallel bus operating at 622.08 MHz, compli-
ant with the OIF SFI-4 and the proposed IEEE P802.3ae XSBI
interfaces. In 10GbE LAN PHY mode, the line side interface oper-
ates as a XSBI-compliant 16-bit LVDS parallel interface operating at
644.53MHz.
System Interface
A 64-bit, 200MHz FlexBus-4^TM interface is used for transferring
packets on the system side. FlexBus-4^TM is compliant to the OIF
SPI-4 Phase 1 Specification.
Microprocessor Interface
The user of the S19205 can select between an 8-bit asynchronous
or a 16-bit synchronous microprocessor interface for device control
and monitoring. The interface supports both Intel and Motorola type
microprocessors, and is capable of operating in either an interrupt
driven or polled-mode configurations.
Applications
• Core switches/routers
• Multi-service switches
• MAN switches
• Direct Mapping of any traffic type in SONET/SDH
STS-192c/AU-4-64c payloads
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