mt90226ag ETC-unknow, mt90226ag Datasheet - Page 22

• Manufacturer Part Number: mt90226ag
• Description: 16/8 Port Tc Phy Device
• Manufacturer: ETC-unknow

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1.0
The MT90225/226 implements Transmission Convergence layer functions.
The primary function of MT90225/6 is to transfer the cells from the UTOPIA Interface to a serial (TDM) port and from
TDM ports to UTOPIA interface without any overhead. Up to 16 UTOPIA PHY addresses can be supported - one
per serial port. A different UTOPIA PHY address is assigned to each one of the links.
1.1
The MT90225/226 circuitry implements the following functions:
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The MT90225/226 can be separated into four major independent blocks and three support blocks.The four major
independent blocks are:
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The three support blocks are:
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Utopia Level 1 or 2 PHY Interface
Incoming HEC verification and correction (optional),
Generation of a new HEC byte
Format outgoing bytes into multi-vendor TDM formats
Retrieve ATM Cells from the incoming multi-vendor TDM format
Perform cell delineation
Provide various counters to assist in performance monitoring
Generation and insertion of Idle Cells; The Idle cells are pre-defined.
Provide structured Interrupt scheme to report various events
16-bit microprocessor interface (adaptable to Intel or Motorola interfaces)
loopbacks
the ATM Transmit Path
the ATM Receive Path
the TDM Interface
the UTOPIA Interface
the Counter Block
the Interrupt Block
the Microprocessor Interface Block
Device Architecture
MT90225/6 Main Functions
Zarlink Semiconductor Inc.
Data Sheet