PM8621-BI PMC-Sierra, Inc., PM8621-BI Datasheet - Page 44

• 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
The status routine,
from underlying devices such as clock monitoring.
Interface/Clock Configuration
The chipset works with either SBI/SBI336 or TeleCombus devices. The function,
nbcsIntfCfgBus
SBS devices can be configured to handle 4xSBI bus @ 19.44 MHz or 1xSBI336 @ 77.76 MHz.
In addition, parallel 77.76 MHz SBI bus output on the transmit side can be selected. Doing so
disables all the LVDS serial output. (Note: SBSLITE does not support the 4xSBI mode nor the
parallel bus output mode). Other parameters that can be configured include bus parity, even or
odd.
For TeleCombus, the configuration is similar. User has a choice of either 4x19.44 MHz
TeleCombus or 1 x 77.76 MHz TeleCombus. For additional bus parameters, user can configure
bus parity, J1 byte position, H1 and H2 pointer value, etc… Function
configures the payload type of the SBI/TeleCombus once the bus type is defined. For SBI bus,
this function configures what type of traffic the SPE carries. It can be T1, E1 or DS3/E3. For
TeleCombus, this function configures the VT types, VT1.5, VT2, VT3, or VT6 being carried in
the SPE. If the system operates in SBI bus mode, the function,
configures the attributes of the tributaries. For each tributary, user can enable the output on the
bus (applicable only in outgoing but not incoming bus), enable the CAS processing, enable the
justification request, and defines the tributary as a transparent virtual one (TVT).
All the CSUs (clock synthesis units) and DLLs are accessible via
this logical block. User can reset or put any units in the chipset to low power mode.
The C1 frame pulse delay of a given device/group can be programmed by calling API
nbcsIntfCfgC1FrmDly
LVDS Serial Link Control
This block provides functions
nbcsLkcForceOfa, nbcsLkcForceOca
violation, inserting test pattern, out-of-frame and character alignment, and centering FIFOs
respectively. In addition, serial links in NSE can be put into low power mode when unused.
Invoking API function
working and the protection link if the software link control option is enabled. This parameter,
along with J0 byte insertion, and termination mode are all accessible from this block using
nbcsLkcCfg
.
nbcsStatsGetStatus
, configures the SBS devices in the chipset driver for either bus system. The
nbcsLkcCntl
.
nbcsLkcInsertLcv, nbcsLkcInsertTp,
for SBS devices, user can select the active link between the
, and
, is responsible for retrieving the status information
nbcsLkcCenterFifo
Narrowband Chipset Device Driver Manual
nbcsIntfCfgTrib
nbcsIntfCfgCsu
nbcsIntfCfgPyld
for forcing line code
Software Architecture
, further
provided by
,
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