cx29600 Mindspeed Technologies, cx29600 Datasheet - Page 214
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cx29600
Manufacturer Part Number
cx29600
Description
Optiphytm - M155 Sts-3 Sonet/sdh Multiplexer
Manufacturer
Mindspeed Technologies
Datasheet
1.CX29600.pdf
(219 pages)
- Current page: 214 of 219
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Appendix A : CX29600 Software Overview
A.2 DDPI Overview
A.2.1 Device Initialization, Configuration, and Shutdown Capability
A.2.2 SONET Overhead, Status and Interrupt Processing
A.2.3 Statistics and Counter Retrieval
A-4
A.2 DDPI Overview
The CX29600 DDPI layer performs these key functions:
utilization of the CX29600 device. The DDPI further abstracts the device use
from the specific hardware details.
of primitives that is suited for use by a device driver wrapper layer. Internal to
each DDPI primitive, the DDPI layer sequences the required HPI calls to perform
the required operation.
The DDPI is responsible for initialization, configuration, management, event
processing and shutdown of the CX29600 device.
device into a default state. The default state may be altered according to the
specified parameters. It is possible to initialize the CX29600 device in a different
sequence. However, by using the DDPI the initialization is performed in a known,
consistent, and controlled fashion.
some configuration may only occur during initialization, the DDPI ensures the
device is not put in an invalid operational condition.
The CX29600 DDPI primitives can be found in the CX29600 Software Driver
Package (CX29600DRV OptiPHY™).
The DDPI is responsible for managing the statistics gathering and counter
processing for the support of the SONET/SDH Interface MIB (RFC 2558). This
is achieved by collecting the appropriate counter values and status from the
device each second. These are processed in-order to maintain the object
identifiers defined in the MIB. Only those object identifiers supported by the
device can be supported. VT related objects are therefore not supported. In
addition to the MIB statistics, raw counter values are accessible through the
DDPI.
• Aggregates HPI primitives to provide device driver type primitives.
• Device initialization, configuration, and shutdown capability.
• SONET/SDH Overhead, Status, and Interrupt processing.
• Maintains applicable SONET/SDH RFC 2558 MIB statistics and counters.
The purpose of the DDPI is to simplify the initialization, configuration and
The DDPI layer incorporates the HPI primitives to create a smaller interface
The DDPI provides an initialization primitive to put the specified CX29600
After initialization, the device may require additional configuration. Because
Mindspeed Technologies
™
CX29600 Data Sheet
29600-DSH-001-B
CX29600
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