PM8621-BI PMC-Sierra, Inc., PM8621-BI Datasheet - Page 58

• 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
It is imperative to point out that the CSD uses the in-band link controller to access and change
connection page numbers for remote SBSs from the NSE side. In other words, API
nbcsStswTogglePage, nbcsStswGetPage,
(hence the aforementioned sequence for call management) if the field
configurable from MIV is set to be controlled by the PAGE header bits in the in-band link
controller. If the system configuration uses other means to synchronize page switch for the entire
fabric such as an external hardware line, user is advised to call API
enable the C1 frame pulse detection and embeds the necessary logic (such as toggling this
hardware line in our example) in the callback function
switch.
1+1 Port Protection in Distributed System
Here is the sequence for setting up the 1+1 port protection and triggering a switch over. Note that
the protection port payload types has to be identical to that of the working port. This also applies
to the case of 1:N protection. The payload types of the protection port has to be identical to that of
the working port:
1. User calls
2. Define the payload types for both the working and protect port to be identical.
3. When a switch over is deemed necessary (determined by some upper layer signaling
4. Upon receiving a success from the chipset driver, the application should then call
Adding New Line/Service Card
In the event when a line/service card needs be added, it can be achieved without affecting the rest
of the cards and traffic flow.
1) Call
2) Call
3) Call
4) (optional) Call
supplies it with the working and protection port(s).
protocol), user can call
nbcsFmgtGetChgMap
teardown case in previous section.
type and the tributaries.
ready to source or sink traffic. This is to bring the new device to the same state as the other
devices so that their device states are synchronized.
nbcsAdd
nbcsFmgtDefWiring
nbcsIntfCfgPyld
nbcsFmgtSetProtect
and then
nbcsActivate
nbcsFmgtSwitchProtect
to retrieve new settings. The rest is similar to the call/setup and
nbcsInit
and then
to define the new wiring topology.
to bring the new device to ACTIVATE. The new card is now
nbcsIntfCfgTrib
to specify what protection, 1+1 or 1:N to setup, and
with a valid DIV
and
cbackNbcsC1FP
nbcsStswSetPage
Narrowband Chipset Device Driver Manual
to initiate a switchover.
if necessary to configure the payload
nbcsEventDetectC1FP
pageSwapCntl
to orchestrate the
are operational only
Software Architecture
to
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