PM5364 pmc-sierra, PM5364 Datasheet - Page 263

• Manufacturer Part Number: PM5364
• Description: Tupp 2488 Assp Telecom Standard
• Manufacturer: pmc-sierra

14.7
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
Figure 75 Alarm Signal (TRAD) with non-TU3 Tributary (TRAD_BIPE_SEL = ‘1’)
Figure 76 Alarm Signal (TRAD) with TU3 Tributary (TRAD_BIPE_SEL = ‘1’)
High Order Receive Path Overhead Port (High Order)
The High Order Receive Path Overhead (HRPOH) port (HRPOH, HRPOHEN and HB3E) is
used to output the path overhead bytes and path BIP-8 error indications (HB3E) extracted from
the ingress data stream. The POH bytes are output on HRPOH MSB first in the same order that
they are received. Figure 77 shows HRPOH output timing. Since HPOHFP is synchronized on
the transport frame, zero, one or two path overhead can be output per path per frame.
HRPOHEN is used to indicate new POH bytes on HRPOH. HRPOHEN is either asserted or de
asserted for the nine POH bytes. The path BIP-8 errors are output on HB3E at the same time
the path trace byte is output on HRPOH.
Note:
•
HRPOHEN will be asserted to validate zero, one or two opportunities per path per frame out of three
possible opportunities to output a path overhead byte. HRPOHEN opportunities will alternate from
path to path and from frame to frame based on pointer movement. Use HRPOHEN to determine
which timeslot and which bits are valid.
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
Released
263