PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 40

• Manufacturer Part Number: PM8610-BIAP
• Description: SBS Telecom Standard Product Data Sheet Preliminary
• Manufacturer: PMC [PMC-Sierra, Inc]

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000168, Issue 3
Pin Name
IPL[4]
IPL[3]
IPL[2]
IPL[1]
Type
Input
Pin No.
T25
AF7
AD13
G1
Incoming Bus Payload (IPL[4:1]). The Incoming Payload signal,
IPL[4:1], indicates valid tributary data within each of the
corresponding SBI buses. In TelecomBus mode, this signal
indicates valid path payload.
In SBI/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 SBI/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 SBI/SBI336 structure. For fractional
rate links this signal indicates that the current octet is carrying valid
data when high.
Multiple SBI/SBI336 devices can drive this signal at uniquely
assigned tributary columns within the SBI/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[x] is set high to mark each
payload byte on IDATA[x][7:0] and is set low to mark each
transport overhead byte..
IPL[1] can be part of either a 19.44 MHz SBI or TelecomBus when
combined with IPL[4:2] or can be used as part of a standalone
77.76 MHz SBI336 or TelecomBus.
IPL[x] is sampled on the rising edge of SREFCLK.
IPL[4:2] have integral pull-up resistors.
Function
SBS Telecom Standard Product Data Sheet
Preliminary
40