PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Pin Name
ITPL[3]
Type
Pin
No.
Function
Input
W20 The incoming tributary payload active #3
(ITPL[3]) signal marks the bytes carrying the
tributary payload for the STM-1 #3 stream when
pointer interpreter bypass is enabled (PIBYP bit
set high). When pointer interpreter bypass is
disabled (PIBYP bit set low), ITPL[3] is ignored.
Also, ITPL[3] is ignored when IPL[3] is low.
In incoming STM-1 (STS-3) interface mode
(IHSMODEB set high), ITPL[3] is set high to
mark each tributary payload byte on the
ID[23:16] bus. ITPL[3] is sampled on the rising
edge of SCLK.
In incoming STM-4 (STS-12) interface mode
(IHSMODEB set low), ITPL[3] is unused and
must be strapped low.
ITPL[4]
Input
AA7 The incoming tributary payload active #4
(ITPL[4]) signal marks the bytes carrying the
tributary payload for the STM-1 #4 stream when
pointer interpreter bypass is enabled (PIBYP bit
set high). When pointer interpreter bypass is
disabled (PIBYP bit set low), ITPL[4] is ignored.
Also, ITPL[4] is ignored when IPL[4] is low.
In incoming STM-1 (STS-3) interface mode
(IHSMODEB set high), ITPL[4] is set high to
mark each tributary payload byte on the
ID[31:24] bus. ITPL[4] is sampled on the rising
edge of SCLK.
In incoming STM-4 (STS-12) interface mode
(IHSMODEB set low), ITPL[4] is unused and
must be strapped low.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
32
PMC [ PMC-SIERRA, INC ]
