Embedded Peripherals IP User Guide

ID 683130
Date 8/11/2025
Public
Document Table of Contents
1. Introduction 2. Avalon® -ST Single-Clock and Dual-Clock FIFO Cores 3. Avalon® -ST Serial Peripheral Interface Core 4. SPI Core 5. SPI Agent/JTAG to Avalon® Host Bridge Cores 6. Intel eSPI Agent Core 7. eSPI to LPC Bridge Core 8. Ethernet MDIO Core 9. Intel FPGA 16550 Compatible UART Core 10. UART Core 11. JTAG UART Core 12. Intel FPGA Avalon® Mailbox Core 13. Intel FPGA Avalon® Mutex Core 14. Intel FPGA Avalon® I2C (Host) Core 15. Intel FPGA I2C Agent to Avalon® -MM Host Bridge Core 16. Intel FPGA Avalon® Compact Flash Core 17. EPCS/EPCQA Serial Flash Controller Core 18. Intel FPGA Serial Flash Controller Core 19. Intel FPGA Serial Flash Controller II Core 20. Intel FPGA Generic QUAD SPI Controller Core 21. Intel FPGA Generic QUAD SPI Controller II Core 22. Interval Timer Core 23. Intel FPGA Avalon FIFO Memory Core 24. On-Chip Memory (RAM and ROM) Intel FPGA IP 25. On-Chip Memory II (RAM or ROM) Intel FPGA IP 26. Optrex 16207 LCD Controller Core 27. PIO Core 28. PLL Cores 29. DMA Controller Core 30. Modular Scatter-Gather DMA Core 31. Scatter-Gather DMA Controller Core 32. SDRAM Controller Core 33. Tri-State SDRAM Core 34. Video Sync Generator and Pixel Converter Cores 35. Intel FPGA Interrupt Latency Counter Core 36. Performance Counter Unit Core 37. Vectored Interrupt Controller Core 38. Avalon® -ST Data Pattern Generator and Checker Cores 39. Avalon® -ST Test Pattern Generator and Checker Cores 40. System ID Peripheral Core 41. Avalon® Packets to Transactions Converter Core 42. Avalon® -ST Multiplexer and Demultiplexer Cores 43. Avalon® -ST Bytes to Packets and Packets to Bytes Converter IP 44. Avalon® -ST Delay Core 45. Avalon® -ST Round Robin Scheduler Core 46. Avalon® -ST Splitter Core 47. Avalon® -MM DDR Memory Half Rate Bridge Core 48. Intel FPGA GMII to RGMII Converter Core 49. HPS GMII to RGMII Adapter Intel® FPGA IP 50. Intel FPGA MII to RMII Converter Core 51. HPS GMII to TSE 1000BASE-X/SGMII PCS Bridge Core Intel® FPGA IP 52. Intel FPGA HPS EMAC to Multi-rate PHY GMII Adapter Core 53. Intel FPGA MSI to GIC Generator Core 54. Cache Coherency Translator Intel® FPGA IP 55. Altera ACE5-Lite Cache Coherency Translator 56. Lightweight UART Core

39.4.1. Functional Description

The test pattern checker core accepts data via an Avalon® -ST interface, checks it for correctness against the same predetermined pattern used by the test pattern generator core to produce the data, and reports any exceptions to the control interface. You can parameterize most aspects of the test pattern checker's Avalon® -ST interface such as the number of error bits and the data signal width, thus allowing you to test components with different interfaces.

The test pattern checker has a throttle register that is set via the Avalon® -MM control interface. The value of the throttle register controls the rate at which data is accepted.

Figure 146. Test Pattern Checker

The test pattern checker core detects exceptions and reports them to the control interface via a 32-element deep internal FIFO. Possible exceptions are data error, missing start-of-packet (SOP), missing end-of-packet (EOP) and signalled error.

As each exception occurs, an exception descriptor is pushed into the FIFO. If the same exception occurs more than once consecutively, only one exception descriptor is pushed into the FIFO. All exceptions are ignored when the FIFO is full. Exception descriptors are deleted from the FIFO after they are read by the control and status interface.

Input Interface

The input interface is an Avalon® -ST interface that optionally supports packets. You can configure the input interface to suit your requirements.

Incoming data may contain interleaved packet fragments. To keep track of the current symbol’s position, the test pattern checker core maintains an internal state for each channel.

Control and Status Interface

The control and status interface is a 32-bit Avalon® -MM agent that allows you to enable or disable data acceptance as well as set the throttle. This interface provides useful generation-time information such as the number of channels and whether the test pattern checker supports packets.

The control and status interface also provides information on the exceptions detected by the test pattern checker core. The interface obtains this information by reading from the exception FIFO.