PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 35

• 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
OPL[4]
OPL[3]
OPL[2]
OPL[1]
OPL[4]
OPL[3]
OPL[2]
OPL[1]
(continued)
Type
Tristate
Output
Pin No.
AF22
V2
M4
A12
Outgoing Bus Payload (OPL[4:1]). The outgoing payload signal,
OPL[x], 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 bus structure. This
signal goes low during the octet after the V3 or H3 octet within a
tributary to accommodate positive timing adjustments between the
tributary rate and the fixed SBI bus structure. For fractional rate
links this signal indicates that the current octet is carrying valid data
when high.
In 19.44 MHz SBI mode, the SBS can drive this signal at uniquely
assigned tributary columns within the SBI bus structure.
In locked TVT mode, this signal must be driven in the same
manner as for floating TVTs.
In TelecomBus mode:
This signal distinguishes between transport overhead bytes and
synchronous payload bytes. OPL[x] is set high to mark each
payload byte on ODATA[x][7:0] and is set low to mark each
transport overhead byte.
OPL[1] can be part of either a 19.44 MHz SBI or TelecomBus when
combined with OPL[4:2] or can be used as part of a standalone
77.76 MHz SBI336 or TelecomBus.
OPL[4:2] are held tri-state when configured for 77.76 MHz
operation.
OPL[x] is updated on the rising edge of SREFCLK.
Function
SBS Telecom Standard Product Data Sheet
Preliminary
35