PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Pin Name
IPL[3]
Type
Pin
No.
Function
AB18
Input
The active high incoming payload active #3
(IPL[3]) signal identifies the bytes within the
transport envelope frame on the incoming STM-
1 #3 stream that carry VC3 or VC4 virtual
containers, or STS-1 synchronous payload
envelopes.
In incoming STM-1 (STS-3) interface mode
(IHSMODEB set high), IPL[3] must be brought
high to mark each payload byte on ID[23:16].
IPL[3] is sampled on the rising edge of SCLK.
In incoming STM-4 (STS-12) interface mode
(IHSMODEB set low), IPL[3] is unused and must
be strapped low.
IPL[4]
Input
W4
The active high incoming payload active #4
(IPL[4]) signal identifies the bytes within the
transport envelope frame on the incoming STM-
1 #4 stream that carry VC3 or VC4 virtual
containers, or STS-1 synchronous payload
envelopes.
In incoming STM-1 (STS-3) interface mode
(IHSMODEB set high), IPL[4] must be brought
high to mark each payload byte on ID[31:24].
IPL[4] is sampled on the rising edge of SCLK.
In incoming STM-4 (STS-12) interface mode
(IHSMODEB set low), IPL[4] is unused and must
be strapped low.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
26
PMC [ PMC-SIERRA, INC ]
