
Multi-Service Access Device For Channelized Interfaces
Telecom Standard Product Data Sheet
Production
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990823, Issue 4
64
Pin Name
Type
Pin No.
Function
IPL[4]
IPL[3]
IPL[2]
IPL[1]
Input
AT29
AU20
AV10
AL1
Incoming Payload Active (IPL[4:1]).
The incoming
payload active bus (IPL[4:1]) distinguishes between
transport overhead / section overhead bytes from
synchronous payload / high order virtual container
bytes in the corresponding incoming data bus
(ID[4:1][7:0]). IPL[
x
] is set high mark each payload /
HO-VC byte on OD[
x
][7:0] and set low to mark each
transport overhead / section overhead byte on
ID[
x
][7:0].
IPL[4:1] is sampled on the rising edge of SYSCLK.
IJ0J1[4]
IJ0J1[3]
IJ0J1[2]
IJ0J1[1]
Input
AV28
AV19
AU10
AK3
Incoming Composite Transport and Payload Frame
Pulse (IJ0J1[4:1]).
The incoming composite transport
and payload frame pulse bus (IJ0J1[4:1]) identifies the
STS/STM frame and the synchronous payload envelop
/ high order virtual container frame boundaries on the
corresponding incoming data bus (ID[4:1][7:0]).
IJ0J1[
x
] is set high when IPL[
x
] is set low to mark the
J0 byte of the STS/STM frame on the ID[
x
][7:0] bus.
IJ0J1[
x
] is set high when IPL[
x
] is set high to mark the
each J1 byte of the SPE / HO-VC frame on the
ID[
x
][7:0] bus.
IJ0J1[1] provides the J0 pulse for all four slices, and
therefore must continually provide J0 regardless of
whether the data stream is active. IJ0J1[4:2] must be
alligned to IJ0J1[1] for the J0 pulse, or their J1 pulses
would be out of alignment.
IJ0J1[4:1] is sampled on the rising edge of SYSCLK.
IPAIS[4]
IPAIS[3]
IPAIS[2]
IPAIS[1]
Input
AU32
AT23
AU15
AP3
Incoming High Order Path AIS (IPAIS[4:1]).
The
incoming high order path alarm bus (IPAIS[4:1])
identifies STS/STM streams on the corresponding
incoming data bus (ID[4:1][7:0]) that are in high order
path AIS state. IPAIS[
x
] is set high when the stream on
ID[
x
][7:0] is in AIS and is set low when the stream is out
of AIS state. IPAIS[4:1] is not used when the RHPP
block is enabled (RHPP_EN = 1).
IPAIS[4:1] is sampled on the rising edge of SYSCLK.
DS3 Overhead Signals (19 Signals)
TOHVAL
Output
AN37
Transmit DS3 Overhead Valid (TOHVAL).
TOHVAL
shows whether or not valid data is available on TOHFP
and whether TOH and TOHINS can be sampled for the
DS3 channel displayed on TOHCH[5:0].
TOHVAL is updated on the rising edge of SYSCLK.
TOHFP
Output
AP39
Transmit DS3 Overhead Frame Pulse (TOHFP).
TOHFP shows the X1 overhead bit alignment position
of the TOH and TOHINS overhead stream for DS3
channel TOHCH[5:0]. This signal is only valid when
TOHVAL is logic 1.
TOHFP is updated on the rising edge of SYSCLK.