Embedded Peripherals IP User Guide

ID 683130
Date 2/09/2023
Public

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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. Intel FPGA MII to RMII Converter Core 51. Intel FPGA HPS GMII to TSE 1000BASE-X/SGMII PCS Bridge Core 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. Lightweight UART Core

55.5.4.4. Control Register

The control register consists of individual bits, each controlling an aspect of the Lightweight UART core's operation. The value in the control register can be read at any time.

Each bit in the control register enables an IRQ for a corresponding bit in the status register. When both a status bit and its corresponding interrupt-enable bit are 1, the core generates an IRQ.

Table 521.  Control Register Bits
Bit Name Access Description
15 IRAFULL Read-write Enable interrupt for RXFIFO almost full
14 IRFULL Enable interrupt for RXFIFO full
13 IRUE Enable interrupt for a RXFIFO underrun error
12 IEOP54 Enable interrupt for end-of-packet condition
11 RTS55 Request to send (RTS) signal
10 IDCTS55 Enable interrupt for a change in CTS signal
9 TRBK Transmit break
8 IE Enable interrupt for an exception
7 IRRDY Enable interrupt for a receive character ready
6 ITRDY Enable interrupt for a transmission ready
5 ITMT Enable interrupt for a transmit data empty
4 ITOE Enable interrupt for a TXFIFO overrun error
3 IROE Enable interrupt for a RXFIFO overrun error
2 IBRK Enable interrupt for a break detect
1 IFE Enable interrupt for a framing error
0 IPE Enable interrupt for a parity error
54 Only applicable if parameter Include end-of-packet is enabled
55 Only applicable if parameter Include CTS/RTS is enabled