PM4328-PI PMC-Sierra, Inc., PM4328-PI Datasheet - Page 81
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PM4328-PI
Manufacturer Part Number
PM4328-PI
Description
Framer, T1|E1|T3 Standard Format, 324-BGA
Manufacturer
PMC-Sierra, Inc.
Datasheet
1.PM4328-PI.pdf
(250 pages)
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STANDARD PRODUCT
DATASHEET
PMC-2011596
9.12 E1 Transmitter (E1-TRAN)
9.13 Transmit Per-Channel Serial Controller (TPSC)
9.14 Signaling Aligner (SIGA)
PROPRIETARY AND CONFIDENTIAL
Framing and Bypass Options register. Finally, the transmitter can be by-passed
completely to provide a clear channel operating mode.
The E1 Transmitter (E1-TRAN) generates a 2048 kbit/s data stream according to
ITU-T recommendations, providing individual enables for frame generation, CRC
multiframe generation, and channel associated signaling (CAS) multiframe
generation.
In concert with Transmit Per-Channel Serial Controller (TPSC), the E1-TRAN
block provides per-timeslot control of idle code substitution, data inversion, digital
milliwatt substitution, selection of the signaling source and CAS data. All
timeslots can be forced into a trunk conditioning state (idle code substitution and
signaling substitution) by use of the master trunk conditioning bit in the E1-TRAN
Transmit Alarm/Diagnostic Control register.
Common Channel Signaling (CCS) is supported in time slot 16 through the
Transmit Channel Insertion (TXCI) block. Support is provided for the
transmission of AIS and TS16 AIS, and the transmission of remote alarm (RAI)
and remote multiframe alarm signals.
The National Use bits (Sa-bits) can be sourced from the E1-TRAN National Bits
Codeword registers as 4-bit codewords aligned to the submultiframe.
Alternatively, the Sa-bits may individually carry data links sourced from the
internal HDLC controller, or may be passed transparently from the ED[x] input.
The Transmit Per-Channel Serial Controller allows data and signaling trunk
conditioning or idle code to be applied on the transmit DS-1 stream on a per-
channel basis. It also allows per-channel control of zero code suppression, data
inversion, channel loopback (from the ingress stream), channel insertion, and the
detection or generation of pseudo-random patterns.
The TPSC interfaces directly to the E1-TRAN and T1-XBAS block and provides
serial streams for signaling control, idle code data and egress data control.
The Signaling Aligner is a block that is only applicable in T1 operating modes.
When enabled, the Signaling Aligner is positioned in the egress path before the
T1-XBAS. Its purpose is to ensure that if the signaling on ESIG[x] is changed in
the middle of a superframe, the XBAS completes transmitting the A,B,C, and D
ISSUE 1
68
HIGH DENSITY T1/E1 FRAMER
AND M13 MULTIPLEXER
PM4328 TECT3
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