PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Pin Name
IC1J1[3]
Type
Pin
No.
Function
AA17
Input
The input C1/J1 frame pulse #3 (IC1J1[3])
identifies the transport envelope and
synchronous payload envelope frame
boundaries on the incoming STM-1 #3 stream
(ID[23:16]).
In incoming STM-1 (STS-3) interface mode
(IHSMODEB set high), IC1J1[3] is set high while
IPL[3] is low to mark the first C1 byte of the
STM-1 #3 transport envelope frame on the
ID[23:16] bus. The C1 byte position must be
coincident to the C1 byte positions of the STM-1
streams on ID[7:0], ID[15:8] and ID[31:24].
IC1J1[3] is set high while IPL[3] is high to mark
each J1 byte of the synchronous payload
envelope(s) on the ID[23:16] bus. IC1J1[3] must
be present at every occurrence of the first C1
and all J1 bytes. The TUPP+622 will ignore a
pulse on IC1J1[3] at the byte position of the V1
byte of the first tributary of each VC3 or the top
byte of the first fixed stuff column of each TUG3.
IC1J1[3] is sampled on the rising edge of SCLK.
In incoming STM-4 (STS-12) interface mode
(IHSMODEB set low), IC1J1[3] is unused and
must be strapped low.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
23
PMC [ PMC-SIERRA, INC ]
