PM4341AT1XC
DATA SHEET
PMC-900602
ISSUE 7
T1 FRAMER/TRANSCEIVER
Pin
Pin No.
Name
RDLSIG/
Type
PQFP PLCC Function
Output 35
40
Receive Data Link Signal (RDLSIG). The
RDLSIG signal is available on this output
when the internal HDLC receiver (RFDL)
is disabled from use, or, optionally, when
the D-channel of the Primary Rate
interface is extracted. When the T1XC is
configured to receive ESF formatted
data, the RDLSIG contains the data
stream extracted from the facility data
link; when the T1XC is configured to
receive SF formatted data, the RDLSIG
output is held low; when the T1XC is
configured to receive T1DM, RDLSIG
reflects the value of the R-bit in the T1DM
sync word; when the T1XC is configured
for SLC®96, RDLSIG contains the value
of the Fs framing bits. When the D-
channel is enabled for extraction,
RDLSIG contains the contents of channel
24 of each DS-1 frame. RDLSIG is
updated on the falling edge of RDLCLK.
RDLINT
Receive Data Link Interrupt (RDLINT).
The RDLINT signal is available on this
output when RFDL is enabled. RDLINT
goes high when an event occurs which
changes the status of the HDLC receiver.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
20
PMC [ PMC-SIERRA, INC ]
