Embedded Peripherals IP User Guide

ID 683130
Date 10/24/2025
Public
Document Table of Contents
1. Introduction 2. Avalon® -ST Serial Peripheral Interface Core 3. SPI Core 4. SPI Agent/JTAG to Avalon® Host Bridge Cores 5. Intel eSPI Agent Core 6. eSPI to LPC Bridge Core 7. Ethernet MDIO Core 8. Intel FPGA 16550 Compatible UART Core 9. UART Core 10. Lightweight 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. EPCS/EPCQA Serial Flash Controller Core 17. Intel FPGA Serial Flash Controller Core 18. Intel FPGA Serial Flash Controller II Core 19. Intel FPGA Generic QUAD SPI Controller Core 20. Intel FPGA Generic QUAD SPI Controller II Core 21. Interval Timer Core 22. Intel FPGA Avalon FIFO Memory Core 23. On-Chip Memory (RAM and ROM) Intel FPGA IP 24. On-Chip Memory II (RAM or ROM) Intel FPGA IP 25. PIO Core 26. PLL Cores 27. DMA Controller Core 28. Modular Scatter-Gather DMA Core 29. Scatter-Gather DMA Controller Core 30. Video Sync Generator and Pixel Converter Cores 31. Intel FPGA Interrupt Latency Counter Core 32. Performance Counter Unit Core 33. Vectored Interrupt Controller Core 34. System ID Peripheral Core 35. Intel FPGA GMII to RGMII Converter Core 36. HPS GMII to RGMII Adapter IP 37. Intel FPGA MII to RMII Converter Core 38. HPS GMII to TSE 1000BASE-X/SGMII PCS Bridge Core IP 39. Intel FPGA HPS EMAC to Multi-rate PHY GMII Adapter Core 40. Intel FPGA MSI to GIC Generator Core 41. Cache Coherency Translator IP 42. Altera ACE5-Lite Cache Coherency Translator

28.14.7.1.2. Control Register (Offset 0x4)

Table 436.  Control Register Bit Definition
Bit Name SW Access HW Access Default Value Description
31:6 <reserved> R N/A 0 Reserved.
5 Stop Descriptors R/W R 0

1: Setting this bit stops the mSGDMA dispatcher from issuing more descriptors to the read or write hosts. Read the stopped status register to determine when the dispatcher stopped issuing commands and the read and write hosts are idle.

0: Unset this bit to resume mSGDMA from its previously stop descriptor operation

Note: This bit is cleared when Reset Dispatcher is set by software.
4 GlobalInterrupt Enable Mask R/W R 0

Setting this bit will allow interrupts to propagate to the interrupt sender port. This mask occurs before the register logic so any interrupt events that are triggered when the mask is disabled will not be latched by IRQ register bit in status register.

Note: This bit is cleared when Reset Dispatcher is set by software.
3 Stopon Early Termination R/W R 0

Setting this bit stops the mSGDMA from issuing more read/write commands to the host modules if the write host attempts to write more data than the user specifies in the length field for packet transactions. The length field is used to limit how much data can be sent and is always enabled for packet based writes.

Note: This bit is cleared when Reset Dispatcher is set by software.
2 Stop on Error R/W R 0

Setting this bit stops the mSGDMA from issuing more read/write commands to the host modules if an error enters the write host module sink port.

Note: This bit is cleared when Reset Dispatcher is set by software.
1 ResetDispatcher R/W R 0

Setting this bit resets the registers and FIFOs of the dispatcher and host modules. Since resets can take multiple clock cycles to complete due to transfers being in flight on the fabric,you should read the resetting status register to determine when a full reset cycle has completed.

Note: This bit is cleared when Reset Dispatcher is set by software.
0 Stop Dispatcher R/W R/W 0

Software sets this bit to 1 to stop the mSGDMA in the middle of a transaction. If a read or write operation is occurring, then the access is allowed to complete. Read the stopped status register to determine when the mSGDMA has stopped. After reset, the dispatcher core defaults to a start mode of operation.

This bit is automatically set by hardware when the condition of early termination or error occurred, and it is programmed to stop on early termination or error.

Note: This bit is cleared when Reset Dispatcher is set by software.