STANDARD PRODUCT
PM4328 TECT3
DATASHEET
PMC-2011596
ISSUE 1
HIGH DENSITY T1/E1 FRAMER
AND M13 MULTIPLEXER
DS2 Transmitter Section:
Sꢀ Generates the required X, F, and M bits into the transmitted DS2 bit stream.
Allows inversion of inserted F or M bits for diagnostic purposes.
Sꢀ Provides for transmission of far end receive failure (FERF) and alarm
indication signal (AIS) under microprocessor control.
Sꢀ Provides optional automatic insertion of far end receive failure (FERF) on
detection of out of frame (OOF), alarm indication signal (AIS) or red alarm
condition.
M12 Multiplexer Section:
Sꢀ Multiplexes four DS1 bit streams into a single M12 format DS2 bit stream.
Sꢀ Performs required bit stuffing including generation and interpretation of C-
bits.
Sꢀ Includes required FIFO buffers for rate adaptation in the multiplex path.
Sꢀ Performs required inversion of second and fourth multiplexed DS1 streams
as required by ANSI T1.107 Section 7.2.
Sꢀ Allows insertion and detection of per DS1 payload loopback requests
encoded in the C-bits to be activated under microprocessor control.
Sꢀ Allows per tributary alarm indication signal (AIS) to be activated or cleared for
either direction under microprocessor control.
Sꢀ Allows automatic tributary AIS to be activated upon DS2 out of frame.
Synchronous System Interfaces:
Sꢀ Provides seven 8Mb/s H-MVIP data interfaces for synchronous access to all
the DS0s of all 28 T1 links or all timeslots of all 21 E1s. T1 DS0s are bundled
from four T1 links in sequential order (i.e. 1-4, 5-8, 9-12, 13-16, 17-20, 21-24,
25-28). In normal mode, E1 timeslots are bundled from 4 E1 links in
sequential order (i.e. 1-4, 5-8, 9-12, 13-16, 17-20 and 21 by itself). In G.747
mode, E1 timeslots are bundled from 3 E1 links in sequential order, spaced
by a reserved timeslot on every 4th frame (i.e. 1-3/X, 4-6/X, 7-9/X, 10-12/X,
13-15/X, 16-18/X, 19-21/X).
PROPRIETARY AND CONFIDENTIAL
9
PMC [ PMC-SIERRA, INC ]
