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IDT77155 Datasheet(PDF) 1 Page - Integrated Device Technology |
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IDT77155 Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 50 page COMMERCIAL TEMPERATURE RANGE NOVEMBER 1996 ©1996 Integrated Device Technology, Inc. DSC-2066/5 8.03 1 • Supports up to 4 PHYs for Multi-PHY connections with 2- bit address and 8-bit data using UTOPIA 2 protocol. • Provides an 8-bit microprocessor bus interface for configuration, control and monitoring. • Low power CMOS • 128 pin PQFP Package (14 mm x 20 mm). DESCRIPTION The IDT77155 is a member of IDT's SWITCHStAR™ family of products for Asynchronous Transfer Mode (ATM) net- works. The IDT77155 is a integrated circuit that provides the SONET/SDH processing and ATM mapping functions of a 155 Mbps/51 Mbps ATM User Network Interface. Provides full compliance with SONET/SDH requirements and ATM Forum Integrated Device Technology, Inc. NICStAR is a trademark and the IDT logo is a registered trademark of Integrated Device Technology, Inc. PHY (TC-PMD) USER NETWORK INTERFACE FOR 155 MBPS ATM NETWORK APPLICATIONS ADVANCED INFORMATION IDT77155 KEY FEATURES • One chip ATM User Network Interface for 155.52 Mbps/ 51.84Mbps operating speed. • Full implementation of the SONET/SDH criteria according to Bellcore GR-253-CORE and ITU-T G.709, G.783. • Full implementation of the ATM physical layer according to CCITT I.432 and ATM Forum User Network Interface Specification. • Full-duplex 155.52 Mbps STS-3c/STM-1 or 51.84 Mbps STS-1 data with built-in clock/data recovery and clock synthesis. • Supports 4-cell PHY FIFO buffers for both transmit and receive directions with parity. • Provides GFC bits insertion and extraction. • UTOPIA Level 1 and Level 2 Interface. SYSTEM-LEVEL FUNCTIONAL BLOCK DIAGRAM Parallel to Serial Transmit SONET Framer Clk Gen. Serial to Parallel Receive SONET Framer Decoder Receive UTOPIA Cell FIFO Encoder Clk Rec. RRCLK+ RRCLK- ALOS+ ALOS- RXD+ RXD- RXDO+ RXDO- RCA TxADDR[1:0] TRCLK+ TRCLK- TXD+ TXD- TXC+ TXC- Transmit UTOPIA Cell FIFO MPHYEN TCA TSOC TDAT[7:0] TXPRTY TFCLK RSOC RDAT[7:0] RXPRTY RFCLK TSEN RxADDR[1:0] 3497 drw 01 Micoprocessor Interface |
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