NOV2124 PRODUCT BRIEF NOV2124TM Quad PORT ATM/POS 155 Mb/s PHYSICAL LAYER IC 1. GENERAL DESCRIPTION The NOV2124 is an integrated circuit that implements four-channel ATM/Packet Over SONET/SDH (POS) processing functions at 155.52 Mb/s. The part contains both the PMD and the TC sublayers and has UTOPIA Level 2 interface to the ATM layer or optionally POS interface to the link layer. The device also includes dedicated serial ports for the insertion and extraction of the DCC overhead bytes. The NOV2124 is fully compliant with the SONET/SDH, B-ISDN ATM Forum User Network Interface requirements and standards, and compliant with PPP protocol over SONET/SDH (RFC 1619/1662 of the IETF). The PMD sublayer is based on Novanet Semiconductor's Hi-PHY technology for high-speed data and PRODUCT FEATURES INCLUDE q q q q q q Processes 155.52 Mb/s STS3c/STM-1 data stream Interfaces to optical fiber transceivers Provides UTOPIA Level 2 interface Provides POS interface On-chip clock and data recovery and clock synthesis 3.3 Volt, 0.35u CMOS technology clock recovery. The UTOPIA Level 2/POS interfaces provide variable modes of operation when interfacing the ATM layer or link layer in order to facilitate the connection of the NOV2124 to different ATM layer or Packet Over SONET/SDH link layer devices. The NOV2124 is targeted primarily for use within ATM switches, routers and WAN switches supporting Packet Over SONET/SDH. The device is manufactured using 0.35 CMOS technology and packaged in a 256 pin PBGA package. For additional information please contact our customer support by e-mail: info@novanetsemi.com or by phone (+972-9-746-4411) or fax (+972-9-7464422). APPLICATIONS q q q Switches Routers ATM/Packet Over SONET/SDH Interfaces NOV2124 PRODUCT BRIEF 2. BLOCK DIAGRAM This block diagram illustrates the functional blocks of the NOV2124 device. Each port consists of the following blocks: Hi-PHYTM - Implements the physical interface to the optical transceiver and the serial to parallel and parallel to serial function. Framer - Implements the SONET/SDH frame processing. ATM Processor - Implements cell processing functions such as cell delineation, HEC verification and calculation etc. POS Processor - Implements packet processing functions such as flag detection and generation, FCS verification and calculation etc. FIFO - The memory cells where the cells/packets data is stored before processing (transmit path) and after processing (receive path). UTOPIA - Implements the interface functions between the PHY and the ATM layer (ATM mode). POS Interface - Implements the interface functions between the PHY and the Link layer (POS mode). TxD3+/- PORT 3 RxD3+/- TxData[15:0] TxAdd[4:0] TxD2+/- TxSOC/P[3:0] PORT 2 RxD2+/- *TxEnb[3:0] TxClav/PTPAx4 TxD1+/- Tx_STPA PORT 1 RxD1+/- TxPrty TxCLK TxD0+ Parallel to Serial TxD0- Hi-PHY RxD0+ Data & Clock Recovery RxD0- Tx POS Processor FIFO Tx_EOP Tx_MOD RxData[15:0] RxAdd[4:0] RxSOC/P[3:0] *RxEnb[3:0] PORT 0 Rx SONET/ SDH Framer Serial to Parallel RxClav/PRPAx4 Rx Overhead Processor Rx POS Processor FIFO Rx ATM Cell Processor FIFO Rx_RVAL RxPrty RxCLK Rx_ERR Rx_EOP Rx_MOD TMS *TRST TDI TDO ASDO ASCLK *ASSTB TCK JTAG Interface ASSI *INTR *DSTB *CS W/*R D[7:0] RLDCC 1-4 RLDCC 1-4 RSDCK 1-4 TLDCK 1-4 RSDCC 1-4 TSDCK 1-4 TSDCC 1-4 A[5:0] Microprocessor Interface Sec./Line DCC i/f TLDCC 1-4 RefCLK- Tx Overhead Processor FIFO Tx_ERR UTOPIA Level 2/ POS Interface Clock Synthesis LPF1 RefCLK+ LPF2 LDCC Tx SONET/ SDH Framer Tx ATM Cell Processor NOV2124 PRODUCT BRIEF 3. TYPICAL APPLICATION The figure below demonstrates connection of a NOV2124 device to one 4-port ATM Layer Device according to UTOPIA Level 2. Connection is performed using the Direct Status Indication mode, in which a dedicated RxClav and TxClav provide direct indication of the status of the FIFO's of each port. Cell transmission is made to/from one PHY port at a time. Receive and transmit channels work simultaneously and independently. This mode supports 16-bit data bus width TxData[15:0] TxAdd[4:0] TxD0+/- Optical Transceiver TxSOC RxD0+/- *TxEnb TxClav[3:0] TxPrty TxD1+/- Optical Transceiver TxCLK RxD1+/- NOV2124 TxD2+/- Optical Transceiver RxData[15:0] RxAdd[4:0] RxD2+/RxSOC *RxEnb RxClav[3:0] TxD3+/- Optical Transceiver RxD3+/- RxPrty RxCLK 4-PORT ATM LAYER DEVICE