Embedded Peripherals IP User Guide

ID 683130
Date 9/18/2024
Public
Document Table of Contents
1. Introduction 2. Avalon® -ST Multi-Channel Shared Memory FIFO Core 3. Avalon® -ST Single-Clock and Dual-Clock FIFO Cores 4. Avalon® -ST Serial Peripheral Interface Core 5. SPI Core 6. SPI Agent/JTAG to Avalon® Host Bridge Cores 7. Intel eSPI Agent Core 8. eSPI to LPC Bridge Core 9. Ethernet MDIO Core 10. Intel FPGA 16550 Compatible UART Core 11. UART Core 12. JTAG UART Core 13. Intel FPGA Avalon® Mailbox Core 14. Intel FPGA Avalon® Mutex Core 15. Intel FPGA Avalon® I2C (Host) Core 16. Intel FPGA I2C Agent to Avalon® -MM Host Bridge Core 17. Intel FPGA Avalon® Compact Flash Core 18. EPCS/EPCQA Serial Flash Controller Core 19. Intel FPGA Serial Flash Controller Core 20. Intel FPGA Serial Flash Controller II Core 21. Intel FPGA Generic QUAD SPI Controller Core 22. Intel FPGA Generic QUAD SPI Controller II Core 23. Interval Timer Core 24. Intel FPGA Avalon FIFO Memory Core 25. On-Chip Memory (RAM and ROM) Intel FPGA IP 26. On-Chip Memory II (RAM or ROM) Intel FPGA IP 27. Optrex 16207 LCD Controller Core 28. PIO Core 29. PLL Cores 30. DMA Controller Core 31. Modular Scatter-Gather DMA Core 32. Scatter-Gather DMA Controller Core 33. SDRAM Controller Core 34. Tri-State SDRAM Core 35. Video Sync Generator and Pixel Converter Cores 36. Intel FPGA Interrupt Latency Counter Core 37. Performance Counter Unit Core 38. Vectored Interrupt Controller Core 39. Avalon® -ST Data Pattern Generator and Checker Cores 40. Avalon® -ST Test Pattern Generator and Checker Cores 41. System ID Peripheral Core 42. Avalon® Packets to Transactions Converter Core 43. Avalon® -ST Multiplexer and Demultiplexer Cores 44. Avalon® -ST Bytes to Packets and Packets to Bytes Converter Cores 45. Avalon® -ST Delay Core 46. Avalon® -ST Round Robin Scheduler Core 47. Avalon® -ST Splitter Core 48. Avalon® -MM DDR Memory Half Rate Bridge Core 49. Intel FPGA GMII to RGMII Converter Core 50. HPS GMII to RGMII Adapter Intel® FPGA IP 51. Intel FPGA MII to RMII Converter Core 52. HPS GMII to TSE 1000BASE-X/SGMII PCS Bridge Core Intel® FPGA IP 53. Intel FPGA HPS EMAC to Multi-rate PHY GMII Adapter Core 54. Intel FPGA MSI to GIC Generator Core 55. Cache Coherency Translator Intel® FPGA IP 56. Lightweight UART Core

28.5.2. Register Map

An Avalon® -MM host peripheral, such as a CPU, controls and communicates with the PIO core via the four 32-bit registers, shown below. The table assumes that the PIO core's I/O ports are configured to a width of n bits.
Table 298.  Register Map for the PIO Core
Offset Register Name R/W (n-1) ... 2 1 0
0 data read access R Data value currently on PIO inputs
write access W New value to drive on PIO outputs
1 direction (1) R/W Individual direction control for each I/O port. A value of 0 sets the direction to input; 1 sets the direction to output.
2 interruptmask (1) R/W IRQ enable/disable for each input port. Setting a bit to 1 enables interrupts for the corresponding port.
3 edgecapture (1) , (2) R/W Edge detection for each input port.
4 outset W Specifies which bit of the output port to set. Outset value is not stored into a physical register in the IP core. Hence it's value is not reserve for future use.
5 outclear W Specifies which output bit to clear. Outclear value is not stored into a physical register in the IP core. Hence it's value is not reserve for future use.
Note :
  1. This register may not exist, depending on the hardware configuration. If a register is not present, reading the register returns an undefined value, and writing the register has no effect.
  2. If the option Enable bit-clearing for edge capture register is turned off, writing any value to the edgecapture register clears all bits in the register. Otherwise, writing a 1 to a particular bit in the register clears only that bit.