PM8611-BIAP PMC [PMC-Sierra, Inc], PM8611-BIAP Datasheet - Page 257

• Manufacturer Part Number: PM8611-BIAP
• Manufacturer: PMC [PMC-Sierra, Inc]

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2010883, Issue 2
The SBS and NSE devices have two configuration pages controlling the switching of each DS0
with CAS. The SBS has independent configuration pages for each direction of data flow through
the device. The NSE has one set of configuration pages. System configuration changes are made
by writing to the offline configuration page in all affected devices and then swapping from the old
configuration page to the new configuration page. The TCMP and OCMP signals control the
current configuration page of the SBS and the CMP signal controls the current configuration page
of the NSE. Swapping of configuration pages must be aligned to frame switching through the
system to avoid any possible data corruption. The TCMP, OCMP and CMP signals are sampled
with the SBS IC1FP and RC1FP signals and the NSE RC1FP signals respectively. The CMP
signals can be connected together at the expense of having to ensure all device configuration
pages are current.
The following diagram shows how the devices are connected together. The following timing
diagrams show the external signals and the internal device frame alignment signal generated
from the programmed delays. Although the CMP signals are sampled externally with the C1FP
signals they are also delayed internally to coincide with the internally delayed frame signals.
These are also shown in the timing diagram. All internal signals are identified by the .INT suffix.
Figure 17 TEMUX-84™/SBSLITE™/NSE/SBSLITE™/AAL1gator-32™ system DS0
SBS #1 OCMP
SBS #1 TCMP
SBS#2 OCMP
SBS#2 TCMP
NSE CMP
C1FP
Switching with CAS
TEMUX84
DC1FP
AC1FP
SBI336
IC1FP
OC1FP
RC1FP OCMP
SBSLITE #1
TCMP
SBI336S
SBSLITE™ Telecom Standard Product Data Sheet
RC1FP
NSE
CMP
SBI336S
RC1FP
IC1FP
SBSLITE #2
OCMP
TCMP
OC1FP
Preliminary
SBI
AALIGATOR32
256
DC1FP
AC1FP