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| odel are Standards to Silicon Product Brief SPI-4 Phase 1 Core w/ FIFOs V1.0 For Altera PLDs June 2001 Benefits * Faster FPGA and ASIC development for improved time-to-market with FlexBUS4 functions Lower development cost through design reuse Available source code licensing for easy design integration and migration to gate arrays or ASICs Ample design flexibility using control signals and generics/parameters Verified functionality and standards compliance Features * OIF-compliant SPI-4 Phase 1 (compatible with AMCC FlexBUS-4) with FIFOs ATM, Packet Over SONET (POS), and Direct Data Mapping1 modes Single- and multi-link operation, scalable from 1 to 16 links. Programmable per-port bandwidth allocation Programmable FIFO size with programmable almost empty/almost full thresholds. Programmable burst size Automatic link selection in the Source block based on Source FIFO threshold and flow control information. 64-bit data bus width. Parity generation/checking data and control words over * * * * * * * * * * Description The Optical Interworking Forum's (OIF) SPI4 Phase 1 interface allows the interconnection of Physical Layer devices to Link Layer devices in 10Gb/s ATM, POS, and Ethernet applications. Modelware's SPI-4 Phase 1 core performs the interface functions on both sides of the interface as shown in Figure 1and Figure 2. Spi4 * * * * * * Altera's Atlantic Interface on user's side. Full synchronous design, exceeds: Clk = 200 MHz Fully automatic test bench including driver/monitor. Easy to use in Mux/Demux and bridge functions Tx FIFO(s) PHY Layer Processor PluriBus Interface Line Tx Data Spi4Tx Link Layer SPI-4 I/F Line Rx Data Spi4Rx Rx FIFO(s) Standards Compliance * * OIF SPI-4 Phase 1 AMCC FlexBUS-4 Control Status Figure 1: SPI-4 Phase 1 PHY Layer Application Direct Data Mapping is a raw data mode supported in AMCC's Ganges device. 1 SPI-4 Phase 1 Core V1.0 Product Brief June 2001 Spi4 Line Rx Data Spi4Rx Sink FIFO(s) Design Package Link Layer Processor PHY Layer SPI-4 I/F Line Tx Data Spi4Tx Atlantic Interface The SPI-4 Phase 1 Core source code package contains: * * * Source code or Netlist Test bench (source code option) Scripts and data files for simulation (behavioral, gate-level, and backannotated), synthesis, and FPGA layout Detailed documentation: Reference Guide: Core features, architecture, interfaces, and operation User's Guide: Core simulation, synthesis, and FPGA layout step-by step procedures. Source FIFO(s) Control Status Figure 2: SPI-4 Phase 1 Link Layer Application * On the system side, the SPI-4 Phase 1 core interfaces to a single or to multiple links or ports via Altera's Atlantic interface. The Spi4Tx block monitors the Source FIFOs fill level and the flow control information received from the opposite side of the SPI-4 interface. If a Source FIFO has data and the flow control information for the corresponding channel indicates that it is ready to accept data, the Spi4Tx block initiates a data transfer from the Source FIFO towards the SPI-4 interface. The Spi4Rx block transmits the Sink FIFO status information to the opposite side according to the Sink FIFO almost-full flags. The Spi4Rx block stores data received for a particular link in that link's FIFO. Sink FIFO flags indicate to the user the presence of data in the FIFO(s). Supported Tools * * * MTI Modelsim for simulation Exemplar Leonardo Spectrum for synthesis Altera Quartus Ordering Information Modelware, Inc. Tel: (732)936-1808 Fax: (732)936-1838 E-mail: sales@modelware.com Internet: www.modelware.com Gate Count The SPI-4 Phase 1 Core configured for 4 channels and targeted to APEX II uses: Logic Elements (LEs): 2700 Embedded System Blocks (ESBs): 23 The above numbers include the core and a small amount of circuitry to implement a loopback on the Atlantic Interface. Trademarks Modelware is a registered trademark of Modelware, Inc. Altera, Quartus, and Atlantic are trademarks of Altera Corporation. FlexBUS is a trademark of AMCC. odel are Standards to Silicon Product Brief SPI-4 Phase 1 Core w/ FIFOs V1.0 For Altera PLDs June 2001 Exemplar and Leonardo Spectrum are trademarks of Exemplar Logic, Inc. |
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