PM8621-BI PMC-Sierra, Inc., PM8621-BI Datasheet - Page 46

• 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
Calling
function include the type of port protection to set up; and all the ports (working and protection)
involved. Port protection is removed by
application calls
protection ports and vice versa. Depending on whether auto setting update is activated, the new
setting will or will not be populated to the (inactive) connection page. In a distributed system
model, user has to retrieve raw device settings by calling
to the proper devices.
In many cases, raw device settings have to be retrieved from the OPA for distributing to the
devices. There are several scenarios that require a change in device setting. The most common
ones are new call connection request, and port protection switchover. The incremental setting
change is required and can be retrieved by
fabric can also be retrieved by
Central to the page switching operation which is required any time new settings are to be
activated, C1 frame pulse detection is provided by calling
enables the underlying C1 frame pulse interrupt. Upper layer application should then listen to the
callback function
requirement is in the case of TeleCombus, where this page swapping operation has to be
completed 27 microseconds after the arrival of the C1 frame pulse. The in-band link PAGE[1:0]
header bits are expected to be used in a distributed system environment.
The fabric can be brought to the initial state (loopback state) by calling
This resets the context of the OPA and essentially wipes out all current connections.
In-band Link Communication Module
In-band links are dedicated point-to-point communication links over LVDS. It is useful for
communication between remote SBSs residing in line cards and NSEs that are populated in a
core-switching card. The chipset driver allows the user to send and receive messages via the in-
band links. Functions are available to send/receive in-band link messages, and configure/retrieve
in-band communication parameters such as FIFO thresholds, timeouts, and etc.
Function
specified LVDS link. When disabled, the in-band link controller is put in a “bypass” mode, no
messages are written or inserted.
nbcsFmgtSetProtect
nbcsIlcCntl
nbcsFmgtSwitchProtect
cbackC1FP
enables/disables the in-band link controller associated with the
nbcsFmgtGetMap
to handle the C1 frame pulse reception. The most stringent
sets up 1+1 and 1:N port protection. The parameters for this
calling nbcsFmgtClearProtect
nbcsFmgtGetChgMap.
to initiate the switching over from working to
.
Narrowband Chipset Device Driver Manual
nbcsFmgtGetChgMap
nbcsEventDetectC1FP
A snapshot of the entire
nbcsFmgtSetLpbkMode
. Upper layer
Software Architecture
for distribution
which
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