UPD98402AGM-KED 查看數據表（PDF） - NEC => Renesas Technology

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UPD98402AGM-KED

LOCAL ATM SONET FRAMER

NEC => Renesas Technology 

DATA SHEET

MOS INTEGRATED CIRCUIT

µPD98402A

LOCAL ATM SONET FRAMER

The µPD98402A 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 µPD98402A 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 µPD98402A 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

The information in this document is subject to change without notice.

Document No. S10835EJ1V0DS00 (1st edition)

Date Published December 1995 P

Printed in Japan

©

1995

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