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78P2352 Datasheet

  • 78P2352

  • OC-3 / STM-1 / STS-3 / E4 Transceivers

  • 37頁

  • ETC

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78P2352
Dual Channel
OC-3/ STM1-E/ E4 LIU
TARGET DATASHEET
MARCH 2003
DESCRIPTION
The 78P2352 is TDK鈥檚 second generation LIU for
155 Mbit/s SDH/SONET (OC-3, STS-3, or STM-1)
and 140Mbit/s PDH (E4) applications. The device is
a dual channel, single chip solution that includes an
integrated CDR in the transmit path for flexible NRZ
to CMI conversion. The device can interface to 75鈩?/div>
coaxial cable using CMI coding or directly to a fiber
optics module using NRZ coding. The 78P2352 is
compliant with all respective ANSI, ITU-T, and
Telcordia standards for jitter tolerance, generation,
and transfer.
APPLICATIONS
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Central Office Interconnects
DSLAMs
Add Drop Multiplexers (ADMs)
PDH/SDH test equipment
FEATURES
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BLOCK DIAGRAM
EACH CHANNEL: Tx
TXxCKP/N
CMIxP/N
SIxCKP/N
PIxCK
PIx[3:0]D
PTOxCK
SOxCKP/N
SOxDP/N
POx[3:0]D
POxCK
CMI-LCV
Detect
EACH CHANNEL: Rx
CMI
Decoder
Rx CDR
Lock Detect
Adaptive
Eq.
G.775
LOS
Detect
RXxP/N
FIFO
CMI
Encoder
ECLxP/N
G.703 compliant line interface for 139.264 Mbps
or 155.52 Mbps CMI-coded coax transmission.
LVPECL compatible line interface for 155.52
Mbps NRZ-coded fiber applications.
Integrated adaptive CMI equalizer and CDR in
receive path.
Serial, LVPECL-compatible system interface
with integrated CDR in transmit path for NRZ to
CMI conversion.
4-bit parallel CMOS system interface with
master/slave Tx clock modes.
Configurable via HW control pins or 4-wire 碌P
interface
Operates from a single reference clock input.
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.
Provides Loss of Lock (LOL), CMI Line Code
Violation (LCV), and G.775 compliant Loss of
Signal (LOS) detection.
Receiver Monitor Mode
Operates from a single 3.3V supply
128-pin TQFP (JEDEC LQFP) package
Lock Detect
SIxDP/N
Tx CDR
1

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