PM8621-BI PMC-Sierra, Inc., PM8621-BI Datasheet - Page 45

• Manufacturer Part Number: PM8621-BI
• Description: Driver, NSE/SBS Narrowband Chipset Driver
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2021248, Issue 1
Space/Time Switch Configuration
This logical block exposes two functions,
write and read the connection maps of the underlying switches, time or space, directly. It is
necessary to access the individual switch when the user has to set up new calls across the fabric.
The sequence is usually to make request for new connections, retrieves all the new settings, and
then configures the switch(es) with the new settings. These functions can also be used to set up
the switching fabric directly, bypassing the OPA all together.
In addition, the driver provides the API
or a group of devices in the system. The API function
page of a device. By utilizing the in-band link PAGE bits, both API functions can be invoked
even for a remote SBS device (from the switch card side) in a distributed configuration.
The API function
for all registered NSE/SBS devices. This operation is pointless when not synchronized with the
incoming C1 frame pulse. As a result, this function utilizes the underlying C1 frame pulse
interrupt to coordinate the page switching in the system to guarantee a hitless page switching
operation. The in-band link PAGE bits are used to switch SBS pages remotely; hence, user should
enable the in-band link page switching operation in all the remote SBSs.
API
within the same switch or from inactive to inactive page across different device of the same type.
Fabric Management Module
The fabric management module provides services for call management that includes call setup,
teardown, fabric setting retrieval, 1+1, 1:N port protection, UPSR protection and etc. This block
interacts with the OPA library, which is responsible for calculating the new fabric setting for new
connections, and providing 1+1 and 1:N port protection services.
The module accepts call setup requests in standard formats, STS-3/3c (SDH AU-4), STS-1,
T1/E1, VTs, DS3/E3, fractional T1/E1s, and DS0s. For T1/E1 VTs, DS3/E3, STS-3/3c or
fractional rate tributaries,
tear down connections. For DS0 connections,
used instead. Routing CAS traffic is achieved by the same
set to logic one. User subsequently calls
CAS DS0 connections. The function
virtual tributaries set aside for CAS routing.
Arbitrary SBS wiring is supported for the fabric. User, by calling
provides a wiring table describing the underlying physical wiring between all SBS devices and
the NSE core. The wiring has to be properly defined before other operation can be carried out.
nbcsStswCopyPage
nbcsStswTogglePage
nbcsFmgtMapTrib
copies the connection map contents from active to inactive page
nbcsFmgtRsvpCasRoute
nbcsStswSetPage
nbcsFmgtUnMapDS0
nbcsStswMapSlot
is designed to perform a system-wide page switching
nbcsFmgtMapDS0
and
nbcsFmgtUnMapTrib
nbcsStswGetPage
Narrowband Chipset Device Driver Manual
nbcsFmgtMapDS0
to switch page(s) of a single device
and
to tear down CAS DS0 or non-
nbcsFmgtDefWiring
and
reserves the total number of
nbcsStswGetSrcSlot
nbcsFmgtUnMapDS0
retrieves the active
are used to setup and
with the CAS flag
Software Architecture
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to
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