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

9.3.5.1. Public APIs

Table 62.  altera_16550_uart_open
Prototype: altera_16550_uart_state* altera_16550_uart_open (const char *name);
Include: <altera_16550_uart.h>
Parameters: name—the 16550 UART device name to open.
Returns: Pointer to 16550 UART or NULL if fail to open
Description Open 16550 UART device.
Table 63.  altera_16550_uart_close
Prototype: int altera_16550_uart_close(altera_16550_uart_state* sp, int flags);
Include: <altera_16550_uart.h>
Parameters: sp—the 16550 UART device name to close.

flags—for indicating blocking/non-blocking access for single/multi threaded.

Returns: None
Description: Closes 16550 UART device.
Table 64.  altera_16550_uart_read
Prototype: int altera_16550_uart_read(altera_16550_uart_state* sp, wchar_t* ptr, int len, int flags);
Include: <altera_16550_uart.h>
Parameters:

sp - The UART device

ptr – destination address

len – maximum length of the data

flags – for indicating blocking/non-blocking access for single/multi threaded

Returns: Number of bytes read
Description: Read data to the UART receiver buffer. UART required to be in a known settings prior executing this function
Table 65.  altera_16550_uart_write
Prototype: int altera_16550_uart_write(altera_16550_uart_state* sp, const wchar_t* ptr, int len, int flags);
Include: <altera_16550_uart.h>
Parameters:

sp - The UART device

ptr – source address

len – maximum length of the data

flags – for indicating blocking/non-blocking access for single/multi threaded

Returns: Number of bytes written
Description: Writes data to the UART transmitter buffer. UART required to be in a known settings prior executing this function
Table 66.  alt_16550_uart_config
Prototype: alt_u32 alt_16550_uart_config(altera_16550_uart_state* sp, UartConfig *setting);
Include: <altera_16550_uart.h>
Parameters:

sp - The UART device

setting – UART configuration structure to configure UART (refer to UART device structure)

Returns: Return 0 for success otherwise fail
Description: Configure UART per user input before initiating read or write