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參數(shù)資料
| 型號： | μPD98402 |
| 廠商： | NEC Corp. |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 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(shù)： | 1/2頁 |
| 文件大?。?/td> | 26K |
| 代理商： | ΜPD98402 |
The μPD98402 implements the asynchronous transfer mode (ATM) transmission convergence (TC)
sublayer function in conformance with the ATM Forum specifications. This device allows for the trans-
porting of ATM cells over SONET/SDH networks at the STS-3c/STM-1 rate of 155.52 Mbps.
μP D 9 8 4 0 2 A T M / S O N E T ( S T S -3 C ) F R A M E R
B L O C K
D I A G R A M
83NG-9880B (1/94)
Receive
PMD
Transmit
ATM
Bus
Interface
Signals
OAM
Interface
Signals
Receive
ATM
Transmit
PMD
Serial/
Parallel
Conversion
Scrambler/
Descrambler
Receive
Overhead Processor
Loopback
PMD
Interface
Transmit/
Receive
FIFO
Loopback
ATM
Interface
Transmit
Overhead Processor
Control
Interface
ScrCell
Descrambler
Cell
Delineation
HEC
Generation/
Verification
All functionality required to insert and
extract 53-byte ATM cells into and out of
SONET frames
HEC generation, verification, and correction
Receive/transmit FIFOs for cells buffering
Scrambling and descrambling, pointer
processing, and frequency justification for
SONET frames
Framing of incoming traffic bytes
Performance monitoring of interleaved
parity bits and path status bytes
Insert/drop registers (SOH: C1#1 to #3, F1,
K2) (POH: F2, C2) for writing/reading of
SONET overhead data
Standard operation and maintenance
(OAM) function to monitor network perfor-
mance and provide alarm indication
F E A T U R E S
UTOPIA interface
Generic 8-bit microprocessor bus interface
for configuration, control, and monitoring
A T M L A Y E R I N T E R F A C E
Differential PECL signals for direct inter-
face to an optical driver/receiver module
Serial data rate of 155.52 Mbps and parallel
(byte-wide) data rate of 19.44 Mbps
M E D I A I N T E R F A C E
ATM adapter cards
Internetworking devices
(bridges and routers)
Workstations and servers
ATM switches and hubs
ATM test equipment
A P P L I C A T I O N S
Internal loopback at the media side and
ATM layer side
Access pins for self-testing
Low-power CMOS technology (0.8-micron)
160-pin PQFP package
G E N E R A L
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