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
POHEN[4]
POHEN[5]
POHEN[6]
Output D19 The tributary path overhead enable
(POHEN[6:4]) signals may be used to identify
E20
E21
tributary path overhead bytes that are being
presented on the corresponding POH stream of
STM-1 #2 for the first time. Each POHEN signal
is set high when a fresh overhead byte is
available on the corresponding POH stream.
POHEN is set low when the tributary path
overhead byte available on the corresponding
POH stream has already been shifted out in a
previous frame. POHEN[4], POHEN[5] and
POHEN[6] identify the status of tributary path
overhead bytes from STS-1 (AU3) #1, #2 and
#3, respectively. In AU4 mode, POHEN[4],
POHEN[5] and POHEN[6] identify the status of
tributary path overhead bytes from TUG3 #1, #2
and #3, respectively. Each POHEN signal is
updated on the falling edge of POHCK.
POHEN[7]
POHEN[8]
POHEN[9]
Output W23 The tributary path overhead enable
(POHEN[9:7]) signals may be used to identify
W22
Y22
tributary path overhead bytes that are being
presented on the corresponding POH stream of
STM-1 #3 for the first time. Each POHEN signal
is set high when a fresh overhead byte is
available on the corresponding POH stream.
POHEN is set low when the tributary path
overhead byte available on the corresponding
POH stream has already been shifted out in a
previous frame. POHEN[7], POHEN[8] and
POHEN[9] identify the status of tributary path
overhead bytes from STS-1 (AU3) #1, #2 and
#3, respectively. In AU4 mode, POHEN[7],
POHEN[8] and POHEN[9] identify the status of
tributary path overhead bytes from TUG3 #1, #2
and #3, respectively. Each POHEN signal is
updated on the falling edge of POHCK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
78
PMC [ PMC-SIERRA, INC ]
