MT90222 ZARLINK [Zarlink Semiconductor Inc], MT90222 Datasheet - Page 152
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MT90222
Manufacturer Part Number
MT90222
Description
4/8/16 Port IMA/TC PHY Device
Manufacturer
ZARLINK [Zarlink Semiconductor Inc]
Datasheet
1.MT90222.pdf
(155 pages)
- Current page: 152 of 155
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Loss of Cell Delineation (LCD) - The LCD defect is reported when the OCD anomaly persists for the period of time
specified in ITU-T Recommendation I.432(30)¸. The LCD defect is cleared when the OCD anomaly has not been
detected for the period of time specified in ITU-T Recommendation I.432.
LCD Remote Failure Indication (LCD-RFI) - The LCD-RFI is reported to the FE when a link defect is locally detect-
ed. The LCD-RFI defect is not always required on the link interface.
Link Delay Synchronization (LDS) - The LDS is an event indicating that the link is synchronized with the other links
within the IMA Group with respect to differential delay.
Loss of IMA Frame (LIF) Defect - the LIF defect is the occurrence of persistent OIF anomalies for at least Gamma
+ 2 IMA Frames.
Link Out of Delay (LODS) Synchronization Defect - The LODS is a link event indicating that the link is not syn-
chronized with the other links within the IMA Group.
Multi-Vendor Integration Protocol (MVIP) - MVIP standards are designed to support the inter-operability of prod-
ucts from different manufacturers and the portability of computer software between products from different manufac-
turers with the goal of facilitating new and improved applications of computer and communications equipment.
Out of Cell Delineation (OCD) Anomaly - As specified in ITU-T Recommendation I.432(30), an OCD anomaly is
reported when ALPHA consecutive cells with incorrect HEC are received. It ceases to be reported when DELTA con-
secutive cells with correct HEC are received.
Out of IMA Frame (OIF) Anomaly - The OIF is the occurrence of an IMA anomaly as defined in the Inverse Multi-
plexing for ATM Specification.
Operational - The Operational State is a group state that has sufficient links in both the transmit and receive direc-
tions to carry ATM Layer cells.
Plesiochronous - The temporal property of being arbitrarily close in frequency to some defined precision. Plesio-
chronous signals occur at nominally the same rate, any variation in rate being constrained within specific limits. Since
they are not identical, over the long term they will be skewed from each other. This will force a switch to occasionally
repeat or delete data in order to handle buffer under-flow or overflow. (In telecommunications, this is known as a
frame slip).
Physical Layer (PHY) - Bottom layer of the ATM Reference Model; provides ATM cell transmission over the physical
interfaces that interconnect the various ATM devices.
Quality of Service (QoS) - ATM performance parameters that characterize the transmission quality over a given VC
(e.g cell delay variation; cell transfer delay, cell loss ratio).
Stuff Event - The Stuff Event is the repetition of an ICP Cell over one IMA Link to compensate for a timing difference
with other links within the IMA Group.
Synchronous
1. The temporal property of being sourced from the same timing reference. Synchronous signals have the same
2. A mode of transmission in which the sending and receiving terminal equipment are operating continually at the
Universal Test and Operations Physical Interface for ATM (UTOPIA) - A PHY-level interface to provide connec-
tivity between ATM components.
Unusable - The Unusable State is a link state indicating that a link is not in use due to a fault, inhibition, etc.
frequency, and a fixed (often implied to be zero) phase offset.
same rate and are maintained in a desired phase relationship by an appropriate means.
Zarlink Semiconductor Inc.
MT90222/3/4
152
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