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參數資料
| 型號： | μPD98402A |
| 廠商： | NEC Corp. |
| 元件分類： | 通信及網絡 |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 文件頁數： | 1/26頁 |
| 文件大小： | 178K |
| 代理商： | ΜPD98402A |
MOS INTEGRATED CIRCUIT
μ
PD98402A
The
μ
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
μ
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
μ
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
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