PM5345 S/UNI-155
DATA SHEET
PMC-930305
ISSUE 4
SATURN USER NETWORK INTERFACE
Pin Name Type
Pin
Function
No.
TFERF
Input
31
The active high transmit line far end receive
failure (TFERF) signal controls the insertion of
line FERF. Line FERF is inserted by
transmitting the code 110 (binary) in bit
positions 6,7, and 8 of the K2 byte. This
function can also be performed via register
access, or be enabled to occur automatically
upon detection of receive line AIS, loss of
signal, or loss of frame. The TFERF input
takes precedence over the TTOH and TTOHEN
inputs. TFERF is sampled on the rising edge
of POCLK.
TPAIS
Input
28
The active high transmit path alarm indication
(TPAIS) signal controls the insertion of STS-
path AIS. A high level on TPAIS forces the
insertion of an all ones pattern into the
complete synchronous payload envelope, and
the payload pointer bytes (H1, H2). Path AIS
insertion is internally synchronized to SPE
frame boundaries. This function can also be
performed via register access. TPAIS is
sampled on the rising edge of POCLK.
TPYEL
Input
30
The transmit path yellow alarm (TPYEL) signal
controls the insertion of path yellow alarm. A
high level on TPYEL forces a logic one to be
inserted in the path yellow bit position in the
path status byte (G1). This function can also
be performed via register access, or be
enabled to occur automatically upon detection
of receive line AIS, loss of frame, loss of
signal, loss of pointer, or STS-path AIS. The
TPOH and TPOHEN inputs take precedence
over the TPYEL input. TPYEL is sampled on
the rising edge of POCLK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
24
PMC [ PMC-SIERRA, INC ]
