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78P2351 Datasheet, PDF (1/42 Pages) Teridian Semiconductor Corporation – Single Channel OC-3/ STM1-E/ E4 LIU | |||
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DESCRIPTION
The 78P2351 is Teridianâs second generation Line
Interface Unit (LIU) for 155 Mbps (OC-3, STS-3, or
STM-1) and 140 Mbps PDH (E4) telecom interfaces.
The device is a single chip solution that includes an
integrated CDR in the transmit path for flexible NRZ
to CMI conversion.
The device can interface to 75⦠coaxial cable using
CMI coding or directly to a fiber optics transceiver
module using NRZ coding. The 78P2351 is
compliant with all respective ANSI, ITU-T, and
Telcordia standards for jitter tolerance, generation,
and transfer.
APPLICATIONS
⢠Central Office Interconnects
⢠DSLAMs
⢠Add Drop Multiplexers (ADMs)
⢠PDH/SDH test equipment
⢠Multi Service Switches
⢠Digital Microwave Radios
78P2351
Single Channel
OC-3/ STM1-E/ E4 LIU
DATA SHEET
SEPTEMBER 2006
FEATURES
⢠ITU-T G.703 compliant cable driver for 139.264
Mbps or 155.52 Mbps CMI-coded coax
transmission
⢠Integrated adaptive CMI equalizer and CDR in
receive path handles over 12.7dB of cable loss
⢠Serial, LVPECL-compatible system interface
with integrated CRU in transmit path for flexible
NRZ to CMI conversion.
⢠4-bit parallel CMOS system interface with
master and slave Tx clock modes.
⢠Selectable LVPECL compatible NRZ media
interface for 155.52 Mbps optical transmission.
⢠Configurable via HW control pins or 4-wire serial
interface
⢠Compliant with ANSI T1.105.03-1994; ITU-T
G.751, G.813, G.823, G.825, G.958; and
Telcordia GR-253-CORE for jitter performance.
⢠Receiver Loss of Signal (LOS) detection
compatible with ITU-T G.783
⢠Operates from a single 3.3V supply
⢠100-pin JEDEC LQFP
BLOCK DIAGRAM
SIDP/N
SICKP/N
PICK
PI[3:0]D
PTOCK
SOCKP/N
SODP/N
PO[3:0]D
POCK
Lock Detect
Tx CDR
FIFO
CMI
Encoder
PMOD, SMOD[1:0], PAR
CMI
Decoder
Rx CDR
Lock Detect
CMI
RLBK,
RDSL
Adaptive
Eq.
LOS Detect
LLBK
ECLP/N
TXCKP/N
CMI2P/N
CMIP/N
RXP/N
Page: 1 of 42
2006 Teridian Semiconductor Corporation
Rev. 2.4
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