PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Pin Name
ITPL[1]
Type
Pin
Function
No.
Input
W2
The incoming tributary payload active #1
(ITPL[1]) signal marks the bytes carrying the
tributary payload for the STM-4 or STM-1 #1
stream when pointer interpreter bypass is
enabled (PIBYP bit set high). When pointer
interpreter bypass is disabled (PIBYP bit set
low), ITPL[1] is ignored. Also, ITPL[1] is ignored
when IPL[1] is low.
In incoming STM-1 (STS-3) interface mode
(IHSMODEB set high), ITPL[1] is set high to
mark each tributary payload byte of the STM-1
#1 stream on the ID[7:0] bus. ITPL[1] is sampled
on the rising edge of SCLK.
In incoming STM-4 (STS-12) interface mode
(IHSMODEB set low), ITPL[1] is set high to mark
each tributary payload byte of the STM-4 stream
on the ID[7:0] bus. ITPL[1] is sampled on the
rising edge of HSCLK.
ITPL[2]
Input
B19
The incoming tributary payload active #2
(ITPL[2]) signal marks the bytes carrying the
tributary payload for the STM-1 #2 stream when
pointer interpreter bypass is enabled (PIBYP bit
set high). When pointer interpreter bypass is
disabled (PIBYP bit set low), ITPL[2] is ignored.
Also, ITPL[2] is ignored when IPL[2] is low.
In incoming STM-1 (STS-3) interface mode
(IHSMODEB set high), ITPL[2] is set high to
mark each tributary payload byte on the ID[15:8]
bus. ITPL[2] is sampled on the rising edge of
SCLK.
In incoming STM-4 (STS-12) interface mode
(IHSMODEB set low), ITPL[2] is unused and
must be strapped low.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
31
PMC [ PMC-SIERRA, INC ]
