PM8611-BIAP PMC [PMC-Sierra, Inc], PM8611-BIAP Datasheet - Page 26

• 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
Pin Name
IPL
IV5
Type
Input
Input
Pin
No.
F14
F13
Function
Incoming Bus Payload (IPL). The IPL signal indicates valid
tributary data within the SBI336 bus. In TelecomBus mode, this
signal indicates valid path payload.
In SBI336 mode:
This active high signal is asserted during all octets making up a
tributary which includes all octets shaded grey in the framing
format tables. This signal goes high during the V3 or H3 octet
within a tributary to accommodate negative timing adjustments
between the tributary rate and the fixed SBI336 structure. This
signal goes low during the octet following the V3 or H3 octet within
a tributary to accommodate positive timing adjustments between
the tributary rate and the fixed SBI336 structure. For fractional rate
links this signal indicates that the current octet is carrying valid data
when high.
Multiple SBI336 devices can drive this signal at uniquely assigned
tributary columns within the SBI336 structure.
For locked TVTs, this signal must be driven in the same manner as
for floating TVTs.
In TelecomBus mode:
This signal distinguishes between transport overhead bytes and
the synchronous payload bytes. IPL is set high to mark each
payload byte on IDATA[7:0] and is set low to mark each transport
overhead byte..
IPL is sampled on the rising edge of SREFCLK.
Incoming Bus Payload Indicator (IV5). This signal locates the
position of the floating payload for each tributary of the incoming
SBI336 or TelecomBuses.
In SBI336 mode:
This active high signal locates the position of the floating payloads
for each tributary within the SBI336 structure. Timing differences
between the port timing and the bus timing are indicated by
adjustments of this payload indicator relative to the fixed bus
structure. All movements indicated by this signal must be
accompanied by appropriate adjustments in the IPL signal.
Multiple SBI336 devices can drive this signal at uniquely assigned
tributary columns within the SBI336 structure.
For locked TVTs, this signal must either be driven in the same
manner as for floating TVTs or held low.
In TelecomBus mode:
This signal identifies tributary payload frame boundaries on the
incoming data bus. IV5 is set high to mark the V5 bytes on the
bus.
IV5 is sampled on the rising edge of SREFCLK.
SBSLITE™ Telecom Standard Product Data Sheet
Preliminary
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