PM5364 pmc-sierra, PM5364 Datasheet - Page 261

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

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
Figure 72 shows the functional timing for TPOH in TU3 mode. The gray area in the TPOH
stream is 1 of 4 of the reserved timeslots for the first TU3 Tributary Path Overhead bytes. Note
that each set of TU3 path overhead only occupies 3 low-order tributary path overhead timeslots,
the rest of the 25 timeslots are all set to 0.
Figure 72 Tributary Path Overhead (TPOH) in TU3 Mode
When the TRAD_BIPE_SEL bit (Reg. 004BH, etc) is set to ‘0’, the Tributary Alarm Signals
(TRAD) outputs the BIP-2 or BIP-8 (TU3 mode) error counts, RDI, RFI, PDI-P and LOM
indications for all the tributaries. TRAD outputs the alarm signals in the sequence of B1, B2, R,
AR, P, L, F and an empty bit (set to low). These bits are described in Table 50.
Table 50 TRAD Bit Descriptions
When the TRAD_BIPE_SEL bit is set to ‘1’, the TRAD port only outputs the BIP-2 or BIP-8
(TU3 mode) error counts.
TRAD Bits
B1, B2
R, AR
P
L
F
Descriptions
If the number of BIP-2 errors (BIP-8 in TU3) is 1, B1=H and B2=L. If the number of BIP-
2 errors (BIP-8 in TU3) is 2, B1=H and B2=H.
In normal RDI mode, R reports RDI and AR reports RFI status. In enhanced RDI mode,
R reports RDI and AR reports ERDI . AR is not valid for TU3 traffic.
Reports PDI-P due to tributary path defect indication PDI-V, AIS, LOP and UNEQ
states.
Reports LOM state. L is not valid for TU3 traffic.
Indicates RFI status in Enhanced RDI mode and ignores in normal RDI mode. F is not
valid for TU3 traffic.
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
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