PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Pin Name
IAIS[1]
Type
Pin
Function
No.
Input
Y1
The incoming tributary alarm indication signal #1
(IAIS[1]) marks tributaries on the incoming STM-
4 or STM-1 #1 stream that are in AIS state when
pointer interpreter bypass is enabled (PIBYP bit
set high). When pointer interpreter bypass is
disabled (PIBYP bit set low), IAIS[1] is ignored.
Also, IAIS[1] is ignored when IPL[1] is low.
In incoming STM-1 (STS-3) interface mode
(IHSMODEB set high), IAIS[1] is set high when
the associated tributary of the STM-1 #1 stream
on the ID[7:0] is in AIS state and is set low when
the associated tributary is operating normally.
IAIS[1] is sampled on the rising edge of SCLK.
In incoming STM-4 (STS-12) interface mode
(IHSMODEB set low), IAIS[1] is set high when
the associated tributary of the STM-4 stream on
the ID[7:0] is in AIS state and is set low when
the associated tributary is operating normally.
IAIS[1] is sampled on the rising edge of HSCLK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
36
PMC [ PMC-SIERRA, INC ]
