RapidIO Intel FPGA IP User Guide

ID 683884
Date 9/15/2021
Public
Document Table of Contents

6.2.5. Transmit Maintenance Registers

When transmitting a MAINTENANCE packet, an address translation process occurs, using a base, mask, offset, and control register. As many as sixteen groups of four registers can exist. The 16 register address offsets are shown below the table titles.

Table 82.  Tx Maintenance Mapping Window n BaseOffset: 0x10100, 0x10110, 0x10120, 0x10130, 0x10140, 0x10150, 0x10160, 0x10170, 0x10180, 0x10190, 0x101A0, 0x101B0, 0x101C0, 0x101D0, 0x101E0, 0x101F0
Field Bits Access Function Default
BASE [31:3] RW Start of the Avalon® -MM address window to be mapped. The three least significant bits of the 32-bit base are assumed to be zero. 29'h0
RSRV [2:0] RO Reserved 3'h0
Table 83.  Tx Maintenance Mapping Window n MaskOffset: 0x10104, 0x10114, 0x10124, 0x10134, 0x10144, 0x10154, 0x10164, 0x10174, 0x10184, 0x10194, 0x101A4, 0x101B4, 0x101C4, 0x101D4, 0x101E4, 0x101F4
Field Bits Access Function Default
MASK [31:3] RW Mask for the address mapping window. The three least significant bits of the 32-bit mask are assumed to be zero. 29'h0
WEN [2] RW Window enable. Set to one to enable the corresponding window. 1'b0
RSRV [1:0] RO Reserved 2'h0
Table 84.  Tx Maintenance Mapping Window n OffsetOffset: 0x10108, 0x10118, 0x10128, 0x10138, 0x10148, 0x10158, 0x10168, 0x10178, 0x10188, 0x10198, 0x101A8, 0x101B8, 0x101C8, '0x101D8, 0x101E8, 0x101F8
Field Bits Access Function Default
RSRV [31:24] RO Reserved 8'h0
OFFSET [23:0] RW Window offset 24'h0
Table 85.  Tx Maintenance Mapping Window n ControlOffset: 0x1010C, 0x1011C, 0x1012C, 0x1013C, 0x1014C, 0x1015C, 0x1016C, 0x1017C, 0x1018C, 0x1019C, 0x101AC, 0x101BC, 0x101CC, 0x101DC, 0x101EC, 0x101FC
Field Bits Access Function Default
LARGE_DESTINATION_ID (MSB) [31:24] RO Reserved if the system does not support 16-bit device ID. 8'h0
RW MSB of the Destination ID if the system supports 16-bit device ID.
DESTINATION_ID [23:16] RW Destination ID 8'h0
HOP_COUNT [15:8] RW Hop count 8'hFF
PRIORITY [7:6] RW Packet priority.
2’b11 is not a valid value for the PRIORITY field. Any attempt to write 2’b11 to this field is overwritten with 2’b10. 2'b00
RSRV [5:0] RO Reserved 6'h0