Embedded Peripherals IP User Guide

ID 683130
Date 10/18/2021
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) Core 26. On-Chip Memory II (RAM or ROM) 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

11.4.3.4. control Register

The control register consists of individual bits, each controlling an aspect of the 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 98.  control Register Bits
Bit Name Access Description
0 IPE RW Enable interrupt for a parity error.
1 IFE RW Enable interrupt for a framing error.
2 IBRK RW Enable interrupt for a break detect.
3 IROE RW Enable interrupt for a receiver overrun error.
4 ITOE RW Enable interrupt for a transmitter overrun error.
5 ITMT RW Enable interrupt for a transmitter shift register empty.
6 ITRDY RW Enable interrupt for a transmission ready.
7 IRRDY RW Enable interrupt for a read ready.
8 IE RW Enable interrupt for an exception.
9 TRBK RW Transmit break. The TRBK bit allows an Avalon® -MM host peripheral to transmit a break character over the TXD output. The TXD signal is forced to 0 when the TRBK bit is set to 1. The TRBK bit overrides any logic level that the transmitter logic would otherwise drive on the TXD output. The TRBK bit interferes with any transmission in process. The Avalon® -MM host peripheral must set the TRBK bit back to 0 after an appropriate break period elapses.
1019 IDCTS RW Enable interrupt for a change in CTS signal.
11 19 RTS RW Request to send (RTS) signal. The RTS bit directly feeds the RTS_N output. An Avalon® -MM host peripheral can write the RTS bit at any time. The value of the RTS bit only affects the RTS_N output; it has no effect on the transmitter or receiver logic. Because the RTS_N output is logic negative, when the RTS bit is 1, a low logic-level (0) is driven on the RTS_N output.
1219 IEOP RW Enable interrupt for end-of-packet condition.
19 This bit is optional and may not exist in hardware.