MOS INTEGRATED CIRCUIT
PD98402A
The
PD98402A is one of the ATM-LAN LSIs and incorporates the TC sublayer function in the SONET/SDH-
based physical layer of the ATM protocol. The main functions of the
PD98402A include a transmit function for
mapping ATM cells received from the ATM layer onto the payload block of the SONET STS-3c/SDH STM-1 frame
and sending them to PMD (Physical Media Dependent) in the physical layer, and a receive function for separating
the overhead block and ATM cells from the data string received from the PMD sublayer and sending the ATM cells
to the ATM layer.
Futhermore, the
PD98402A is compliant with the ATM Forum UNI Recommendations.
FEATURES
Provision of TC sublayer function of ATM protocol physical layer
Support of SONET STS-3c frame/SDH STM-1 frame format
Provision of stop mode for cell scramble/descramble and frame scramble/descramble
Disposal/transitory selection of unassigned cells is possible.
Compliant with UTOPIA interface
Incorporation of internal loopback function at PMD and ATM layer turns
PMD interface
155.52 Mbps serial interface
19.44 MHz parallel interface
Provided with registers for writing/reading overhead information
SOH (section overhead): C1 (1st to 3rd) bytes, F1 byte
LOH (line overhead): K2 byte
POH (pass overhead): F2 byte, C2 byte
CMOS process
+5 V single power supply
LOCAL ATM SONET FRAMER
Document No. S10835EJ1V0DS00 (1st edition)
Date Published December 1995 P
Printed in Japan
The information in this document is subject to change without notice.
1995
DATA SHEET
PD98402A
2
Incorporation of OAM (Operation And Maintenance) function
Transmitting side
Transmission of various alarms
Transmission by generation of sources
Line RDI (FERF), Path RDI (FERF)
Line FEBE, Path FEBE
Transmission by command instruction
Line AIS, Path AIS
Line FEBE, Path FEBE
Receiving side
Detection of alarms and error signals
LOS (Loss Of Signal)
OOF (Out Of Frame)
LOF (Loss Of Frame)
LOP (Loss Of Pointer)
LOC (Loss Of Cell delineation)
Line RDI (FERF), Path RDI (FERF)
Line AIS, Path AIS
Detection and display of quality deterioration sources
B1 error, B2 error, B3 error, Line FEBE,
Path FEBE
Incorporation of counter for counting number of performance
monitoring errors
B1 byte error counter
B2 byte error counter
B3 byte error counter
Line FEBE error counter
Path FEBE error counter
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