PM5343STXC View Datasheet(PDF) - PMC-Sierra
Part Name
Description
MFG CO.
'PM5343STXC' PDF : 198 Pages View PDF
DATA SHEET
PMC-930303
ISSUE 6
PM5343 STXC
SONET/SDH TRANSPORT OVERHEAD TRANSCEIVER
Pin Name Pin Type Pin Function
No.
SCPI[2]/ Input
TPL
SCPI[1]
SCPI[0]
Input
Input
90 The status input (SCPI[2]) is used to monitor
the operation of an auxiliary device when either
the C1EN or the ENH bits in the Mode Select
register are set to logic 0. An interrupt may be
generated when state changes are detected in
SCPI[2]. State changes and the real-time
signal levels on this signal are available in the
Input Port Status/Value register.
The transmit payload (TPL) marks when
TIN[7:0] is carrying a payload byte when both
the C1EN and ENH bits in the Mode Select
register are set to logic 1. It is set high during
path overhead and payload bytes and low
during transport overhead bytes. TPL is set
high during the H3 byte to indicate a negative
pointer justification event and set low during
the byte following H3 to indicate a positive
pointer justification event. The TPL signal is
optionally used in the parity calculation of the
transmit bus. The transmit data bus (TIN[7:0])
is always included in the parity calculation.
Internal register bits in the Mode Select register
control the inclusion of frame pulse (TIFP) and
payload active signal (TPL) in the parity
calculation, and the sense (even/odd) of the
parity.
SCPI[2]/TPL is sampled on the rising edge of
TICLK. SCPI[2]/TPL contains an internal pull-
down resistor.
91 The status port (SCPI[1:0]) together with
92
SCPI[3:2] is used to monitor the operation of
auxiliary devices. An interrupt may be
generated when state changes are detected in
the monitored signals. State changes and the
real-time signal levels on this port are available
in the Input Port Status/Value register. Each of
the inputs contains an internal pull-down
resistor.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 30
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