SONET STS-1 Framer
MegaCore Function
(STS1FRM)
June 2001; ver. 1.01
Data Sheet
Features
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Performs synchronous optical network (SONET) framing and
transmission convergence (TC)
Processes transport overhead (TOH) and path overhead (POH)
Supports a data rate of up to 51.84 Megabits per second (Mbps)
Easy-to-use MegaWizard
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Plug-In generates MegaCore
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variants
Quartus
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II software and OpenCore
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feature allow place-and-route,
and static timing analysis of designs prior to licensing
Secure register transfer level (RTL) simulation models allow
simulation with user design in third-party simulators
Optimized for the Altera
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APEX
TM
20KE device architecture
Typical
Applications
Figure 1. Typical Application
rxclk
Figure 1
shows the STS1FRM interfacing with two other Altera MegaCore
variants to achieve ATM transport over SONET.
Midbus
SONET
STS-1
Framer
(STS1FRM)
Atlantic
UTOPIA Level 2 Bus
Line
Interface
Circuit
Clock
Data
Recovery
Serializer
Deserializer
ATM Cell
Processor
155 Mbps
(CP155)(2)
UTOPIA
Interface
(UTOPIA2SL)
txclk
External
CPU
PIF
(1)
CPU Bus
AIRbus
APEX 20K Boundary
Notes:
(1)
(2)
PIF鈥擯rocessor interface block
The CP155 runs at 51.84 MHz.
Other possible applications include:
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ATM switches
Digital cross-connection (DCC) systems
Routers
Multiplexers
Altera Corporation
A-DS-IPSTS1FRM-1.01
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