PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Pin Name
Type
Pin
No.
Function
POH[10]
POH[11]
POH[12]
Output AB8 The tributary path overhead (POH[12:10])
signals contain the tributary path overhead bytes
Y10
AC10
(V5, J2, Z6 and Z7) extracted from the incoming
STM-1 #4 stream. POH[10], POH[11] and
POH[12] contain the tributary path overhead
bytes from STS-1 (AU3) #1, #2 and #3,
respectively. In AU4 mode, POH[10], POH[11]
and POH[12] contain the tributary path overhead
bytes from TUG3 #1, #2 and #3, respectively. All
four tributary overhead bytes of each tributary is
shifted out once per payload frame. The
corresponding POHEN signal is set high to
identify overhead bytes that are presented for
the first time. Each POH signal is updated on the
falling edge of POHCK.
POHFP[1]
POHFP[2]
POHFP[3]
Output K1
The tributary path overhead frame pulse
(POHFP[3:1]) signals may be used to locate the
individual path overhead bits of each tributary for
the corresponding STS-1 (TUG3) in the
L1
N1
incoming STM-1 #1 stream. Each POHFP signal
is set high to mark bit 1 (the most significant bit)
of the V5 byte of the first tributary. POHFP[1],
POHFP[2] and POHFP[3] identify frame
boundaries of the tributary path overhead bytes
from STS-1 (AU3) #1, #2 and #3, respectively. In
AU4 mode, POHFP[1], POHFP[2] and
POHFP[3] identify frame boundaries of TUG3
#1, #2 and #3, respectively. Each POHFP signal
is updated on the falling edge of POHCK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
75
PMC [ PMC-SIERRA, INC ]
