PM5366-PI PMC-Sierra, Inc., PM5366-PI Datasheet - Page 55

• Manufacturer Part Number: PM5366-PI
• Description: HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER AND M13 MULTIPLEXER
• Manufacturer: PMC-Sierra, Inc.

PRELIMINARY
DATASHEET
PMC-2010672
Pin Name
LDV5
LDTPL
LDAIS
PROPRIETARY AND CONFIDENTIAL
Type
Input
Input
Input
ISSUE 1
Pin
No.
W6
Y8
AA8 Line Drop Bus Tributary Path Alarm Indication
Function
Line Drop Bus V5 Byte (LDV5). The incoming
tributary V5 byte signal marks the various tributary V5
bytes. LDV5 marks each tributary V5 byte on the
LDDATA[7:0] bus when high. The LDV5 input is only
used if the Ingress VTPP is bypassed (i.e. the
IVTPPBYP bit of the SONET/SDH Master Ingress
Configuration register is logic 1.)
LDV5 is sampled on the rising edge of LREFCLK.
Line Drop Bus Tributary Payload Active (LDTPL).
The tributary payload active signal marks the bytes
carrying the tributary payload which have been
identified by an external payload processor. When this
signal is available, the internal pointer processor can
be bypassed. LDTPL is only respected for
asynchronously mapped tributaries.
LDTPL is high during each tributary payload byte on
the LDDATA[7:0] bus. In floating mode, LDTPL
contains valid data only for bytes in the VC3 or VC4
virtual containers, or the STS-1 SPE. It should be
ignored for bytes in the transport overhead. In locked
mode, LDTPL is low for transport overhead.
LDTPL is sampled on the rising edge of LREFCLK.
Signal (LDAIS). The active high tributary path alarm
indication signal identifies tributaries on the incoming
data stream LDDATA[7:0] that are in AIS state. When
this signal is available, the internal pointer processor
can be bypassed. LDAIS is invalid when LDTPL is low.
LDAIS is only respected for asynchronously mapped
tributaries.
LDAIS is sampled on the rising edge of LREFCLK.
43
HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER
AND M13 MULTIPLEXER
PM5366 TEMAP-84