M28529G-12 Mindspeed Technologies, M28529G-12 Datasheet - Page 25

• Manufacturer Part Number: M28529G-12
• Description: ATM IMA 8.192Mbps 1.8V/3.3V 484-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of M28529G-12

• Package: 484BGA
• Utopia Type: Level 2
• Typical Operating Supply Voltage: 1.8|3.3 V
• Minimum Operating Supply Voltage: 1.71|3.135 V
• Maximum Operating Supply Voltage: 1.89|3.465 V
• Maximum Output Rate: 8.192 Mbps

1.1.3.1
The internal architecture of the M28529TAP software is composed of five logical subsystems: Configuration (CF),
Diagnostics (DG), IMA Group (GRP), Failure Monitoring (FM), and Performance Monitoring (PM).
The following sections summarize the interfaces of the M28525/9 IMA software device driver. It is important to point
out that the M28525/9 products can be configured to run in different operating environments. As such, not all the
interfaces described below are used in a given application.
1.1.3.2
The CF subsystem is responsible for setting the operating parameters of the IMA device that are associated with
the IMA Link and IMA Group termination entities. Additionally, some of the application specific configurations of the
device are set by this subsystem. The default value for each parameter is used to initialize and set the operating
mode of the device.
1.1.3.3
The DG subsystem performs control and testing functions on the IMA device and its environment. One role of the
DG subsystem is configuration, very similar to the CF subsystem but with different parameters. Similar in function
to the Configuration subsystem, the default value for each DG parameter is used to initialize and set the operating
mode of the device. The DG subsystem parameters are typically exercised only during test or maintenance
conditions, and may affect ATM transmission through the device.
1.1.3.4
The Failure Monitoring (FM) subroutine is responsible for monitoring the IMA links and groups for defects and
anomalies and integrating the defects into failures. The primary role performed by this subsystem is alarm
integration. The M28529TAP program is aware of changes in the state of the underlying defects and anomalies
through periodic polling. The user has control over which Failure indicators are monitored and the length of both
the activation and decay times.
Upon initializing the M28529TAP, the Failure indications required by the ATM MIB are enabled and the activation
and decay times are set at 2.5 and 10 seconds, respectively.
1.1.3.5
This is the set of functions and capabilities necessary for a Network Element (NE) to gather, store, and report
performance data associated with its monitored digital transmission entities. In contrast with alarm/status
indications, performance parameters are quantitative, not binary, in nature. These performance parameters are
gathered over programmable, predetermined accumulation periods. The M28529TAP calculates these statistics
over 15 minute intervals. The PM data is available to the application grouped in a structure encompassing one of
the two accumulation sets: the current 15 minute interval or the previous 15 minute interval. The PM subsystem
uses the raw anomaly and defect information obtained by the FM subsystem to calculate its performance statistics.
Upon initialization, the PM subsystem is basically disabled: none of the monitored statistics are calculated.
1.1.3.6
Overall management of each Group is the responsibility of the Group State Machine. This actually involves three
interrelated processes: the Group State Machine (GSM), the Group Traffic State Machine (GTSM), and the Link
Addition and Slow Recovery (LASR) procedure. These three processes are used to ensure reliable transmission
and reception of ATM layer cells across all links in the Active state. This includes the negotiation of group
parameters (i.e., symmetry and M values), the bringing up of the IMA group, and the graceful addition/recovery and
28529-DSH-001-K
Software Subsystems
Configuration (CF)
Diagnostics (DG)
Failure Monitoring (FM)
Performance Monitoring (PM)
Group State Machine
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Functional Description
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