PM5364 pmc-sierra, PM5364 Datasheet - Page 59

• 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
Pin Name
ETPL_HTPOH[4]
ETPL_HTPOH[3]
ETPL_HTPOH[2]
ETPL_HTPOH[1]
Egress Low Order and High Order Path Overhead Insertion Shared Pins (12 pins)
Type
Bidi
Output for
PP Only
mode
Input
otherwise
Pin No.
H33
P33
AA34
AF32
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
Function
Egress Tributary Payload Active and High
Order Transmit Path Overhead
ETPL_HTPOH[4:1].
Note: When the device is configured in Payload
Processor Loopback Only mode, High Order
Transmit Path overhead insertion is not supported
and low order egress telecom bus signals are
supported. In this mode the pin functions as
ETPL[4:1] output bus.
Note: When the device is not configured in
Payload Processor Loopback Only mode the low
order egress telecom bus signals are not supported
and High Order Transmit Path overhead insertion
is supported. In this mode the pin functions as
HTPOH[4:1] input bus
Egress Tributary Payload Active (ETPL[4:1]).
The Egress tributary payload active bus,
ETPL[4:1], is set high to mark each tributary
synchronous payload / low order virtual container
byte in the corresponding egress data bus
(EDATA[4:1][7:0]). ETPL[N] is set low at STS/STM
transport overhead bytes, high order path overhead
bytes, fixed stuff column bytes and tributary
transport overhead bytes (V1, V2, V3 and V4).
When the V3 byte of the tributary transport
overhead contains part of the tributary SPE due to
a negative pointer justification, ETPL[4:1] is set
high; when a byte is a dummy byte due to a
positive tributary pointer justification, ETPL[4:1] is
set low. When a TUG3 contains TUG2’s, ETPL[4:1]
is set low during the columns containing the NPI
byte and the fixed stuffing byte of the TUG3).
In Payload Processor Loopback Only mode
ETPL_HTPOH[4:1] is an output (ETPL[4:1]) and is
updated on the rising edge of REFCLK.
High Order Transmit Path Overhead.
(HTPOH[4:1)
The high order transmit path overhead signal
contains the path overhead bytes (J1, B3, C2, G1,
F2, H4, F3, K3, and N1) to be transmitted in the
high order SONET/SDH path overhead.
A path overhead byte is accepted for transmission
when the external source indicates a valid byte
(EIDLE_HTPOHEN[4:1] set high) and the TUPP
2488 indicates ready (EV5_HTPOHRDY[4:1] set
high). The EV5_HTPOHRDY[4:1] is set low to
indicate the TUPP 2488 is not ready, and the byte
must be re-presented at the next opportunity.
Released
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