RELEASED
PM4354 COMET-QUAD
DATASHEET
PMC-1990315
ISSUE 6
FOUR CHANNEL COMBINED E1/T1/J1
TRANSCEIVER / FRAMER
1
FEATURES
• Monolithic device which integrates four, full-featured T1 and E1 framers and T1 and E1 short haul and
long haul line interfaces.
• Software selectable between T1/J1 and E1 operation on a per-device basis.
• Meets or exceeds T1 and E1 shorthaul and longhaul network access specifications including ANSI
T1.102, T1.403, T1.408, AT&T TR 62411, ITU-T G.703, G.704 as well as ETSI 300-011, CTR-4, CTR-
12 and CTR-13.
• Provides encoding and decoding of B8ZS, HDB3 and AMI line codes.
• Provides receive equalization, clock recovery and line performance monitoring.
• Provides transmit and receive jitter attenuation.
• Provides digitally programmable long haul and short haul line build out.
• Provides four full-featured HDLC controllers, each with 128-byte transmit and receive FIFO buffers.
• Automatically generates and transmits DS-1 performance report messages to ANSI T1.231 and ANSI
T1.408 specifications.
• Supports Nx64Kbit/s fractional bandwidth backplane.
• Supports transfer of PCM data to/from 1.544MHz and 2.048MHz system-side devices. Also supports
a fractional T1 or E1 system interface with independent backplane receive/backplane transmit
Nx64Kbit/s rates. Supports a 2.048 MHz system-side interface for T1 mode without external clock
gapping.
• Supports 8.192 Mbit/s, H-100 compatible, H-MVIP on the system interface for all T1 or E1 links, a
separate 8.192 Mbit/s H-MVIP system interface for all T1 or E1 CAS channels and a separate 8.192
Mbit/s H-MVIP system interface for all T1 or E1 CCS, V5.1/V5.2, and GR.303 channels.
• Provides a selectable, per channel independent de-jittered T1 or E1 recovered clock for system timing
and redundancy.
• Provides PRBS generators and detectors on each tributary for error testing at DS1, E1 and Nx64Kbit/s
rates as recommended in ITU-T O.151 and O.152.
• Provides robbed bit signaling extraction and insertion on a per-DS0 basis.
• Register level compatibility with the PM4388 TOCTL Octal T1 Framer, the PM6388 EOCTL Octal E1
Framer, the PM4351 COMET E1/T1 transceiver, and the PM8315 TEMUX T1/E1 Framer with
integrated Mapper and M13 MUX.
• Provides an 8-bit microprocessor bus interface for configuration, control, and status monitoring.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC. AND FOR ITS CUSTOMERS’ INTERNAL USE
1