RapidIO II Intel® FPGA IP User Guide

ID 683444
Date 9/28/2020
Public
Document Table of Contents

6.3.4.2. I/O Master Address Mapping Registers

When the IP core receives an NREAD, NWRITE, NWRITE_R, or SWRITE request packet, the RapidIO address has to be translated into a local Avalon® -MM address. If you specify at least one address mapping window, the translation involves the base, mask, and offset registers. The IP core has up to 16 register sets, one for each address mapping window. The 16 possible register address offsets are shown in the table titles.
Table 138.  Input/Output Master Mapping Window n BaseOffset: 0x10300, 0x10310, 0x10320, 0x10330, 0x10340, 0x10350, 0x10360, 0x10370, 0x10380, 0x10390, 0x103A0, 0x103B0, 0x103C0, 0x103D0, 0x103E0, 0x103F0
Field Bits Access Function Default
BASE [31:4] RW Start of the RapidIO address window to be mapped. The four least significant bits of the 34-bit base are assumed to be zeros. 28'h0
RSRV [3:2] RO Reserved. 2'b00
XAMB [1:0] RW Extended Address: two most significant bits of the 34-bit base. 2'b00
Table 139.  Input/Output Master Mapping Window n MaskOffset: 0x10304, 0x10314, 0x10324, 0x10334, 0x10344, 0x10354, 0x10364, 0x10374, 0x10384, 0x10394, 0x103A4, 0x103B4, 0x103C4, 0x103D4, 0x103E4, 0x103F4
Field Bits Access Function Default
MASK [31:4] RW Bits 31 to 4 of the mask for the address mapping window. The four least significant bits of the 34-bit mask are assumed to be zeros. 28'h0
RSRV [3] RO Reserved. 1'b0
WEN [2] RW Window enable. Set to one to enable the corresponding window. 1'b0
XAMM [1:0] RW Extended Address: two most significant bits of the 34-bit mask. 2'b00
Table 140.  Input/Output Master Mapping Window n OffsetOffset: 0x10308, 0x10318, 0x10328, 0x10338, 0x10348, 0x10358, 0x10368, 0x10378, 0x10388, 0x10398, 0x103A8, 0x103B8, 0x103C8, 0x103D8, 0x103E8, 0x103F8
Field Bits Access Function Default
OFFSET [31:4] RW Starting offset into the Avalon® -MM address space. The four least significant bits of the 32-bit offset are assumed to be zero. 28'h0
RSRV [3:0] RO Reserved. 4'h0

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