4

Empowering Intelligent Optical Networks

TIGRIS

OC-48 Multi Protocol Termination for 2047 Channels

Part Number S4811, Rev. 2.4 July 2006

• Extensive per channel statistics that include:

• Good RX cells.

• Good TX cells.

• RX loss of cell delineation events.

• RX HEC errors single bit corrected.

• RX HEC errors uncorrected.

• RX PLCP BIP errors.

• RX PLCP Remote Alarm Detected indicator.

• RX PLCP OOF indication.

• Global count of TX HEC errors received over SPI-3 in 56B

mode.

Queue Management

• On chip queue management.

• Multiple RX High/Low priority queues with programmable

service priority arbitration.

• Per channel TX High/Low priority queues with

programmable watermarks and optional discard at high

threshold.

• Full “out of band” access to on chip queue threshold

status via a 15 pin Queue Access Bus interface. Useful for

monitoring the fill level of TX and RX queues for flow

control operation.

• Per TX queue enable/disable for IMA group channel

synchronization.

Buffer Structure and Memory Management

• Manages packet data as it is moved in and out of external

SDRAM.

• On-chip pointer storage memory.

• Supports 96K packet/cell buffers.

• Configurable buffer size from 2KB to 16KB.

• Buffers are automatically linked into virtual buffers to hold

larger packets.

• RX HDLC or direct mapped packets can be by

fragmented in Nx8byte sizes and queued for transmission

on the System Interface to provide a lower latency than

full packet store and forward.

Figure 3: TIGRIS Expansion Mode used for a 2 x OC-12 solution with 4k channels

EVROS

S1208

TIGRIS

S4811

AMCC Flexible Tributary Interface (FTI)

622MHz BW Supports any valid combination

of the following:

1xSTS12c, 4xSTS3c, 12xSTS1

12DS3/E3, 336DS1/VT1.5, 252E1/VT2

HDLC/ATM controllers

4094 packet/cell channels

Supports fractional DS3

SONET to PDH framer/mapper

1xOC-12, 4XOC-3 , 12xDS3/E3

336DS1/VT1.5

252E1/VT2

Industry standard

SPI-3 interface

for Cells and

packets transfer

Industry standard

SPI-4.2 interface

for Cells and

packets transfer

TIGRIS

S4811

NP3700

EVROS

S1208

S1212

1xOC12

or

4xOC3

S1212

1xOC12

or

4xOC3