Visible to Intel only — GUID: rre1610616358173
Ixiasoft
Visible to Intel only — GUID: rre1610616358173
Ixiasoft
4.5.2.1. Sensitivity Map Header Revision 4 File Format Reference
Block | Sub-block | 32-Bit Word | Bit | Description |
---|---|---|---|---|
Sensitivity map header | — | 0 | [31:0] | The identification word for the .smh format and its version (0xXE445341). |
1 | [31:8] | Reserved. | ||
[7:0] | The advanced SEU detection (ASD) region bitmask size. The ASD region bitmask size is the upper-bound power of two for maximum ASD region ID in the design. The size can be 1, 2, 4, 8, 16, or 32. | |||
2 | [31:0] | The address of the sector information block. | ||
Sectors information block | Sector 0 information | 0 | [31:0] | The address of the sector 0 encoding scheme. |
1 | [31:0] | The address of the encoded sector 0 sensitivity data. | ||
2 | [23:8] | The number of ASD region bitmasks used by sector 0 (the number of .smh tags). A value of 0 indicates that there are no sensitive bits in a sector. | ||
[7:0] | The sector 0 .smh tag size in bits. The size can be 1, 2, 4, 8. | |||
… | … | … | … | |
Sector N information | N×3..N×3+2 | … | … | |
Sectors encoding block | Sector encoding 0 | 0 | [31:16] | The identification word (0xEEEE). |
[15:0] | The size of a single frame encoding (bit→tag index) map in bytes. | |||
1 | [31:0] | The address of the frame information (FADD). | ||
2 | [31:0] | The address of the frame encoding map (EADD). | ||
FADD | [31:20] | The index of encoding map for frame 0. | ||
[19:0] | The sensitivity data offset of the sector sensitivity data for frame 0. | |||
… | … | … | ||
FAAD+K | [31:20] | The index of the encoding map for the last frame. | ||
[19:0] | The sensitivity data offset of the sector sensitivity data for the last frame. | |||
EADD | The frame encoding map 0. This map contains the mapping of "bit position" in the frame to a 16-bit "bit group sensitivity tag index" in the frame sensitivity data. For all phantom bits in a frame, "bit group sensitivity index" is set to 0xFFFF because sensitivity data is not required. |
|||
… | … | … | ||
… | … | … | … | |
Sector encoding N | ... | ... | ... | |
Sectors sensitivity data | Sector 0 Data | 0 | [31:16] | Sector data identification word (0xDDDD). |
[15:0] | Reserved | |||
1..L | Sector regions map where L=(ASD region bitmask size×Number of ASD region masks for the sector+31)/32 |
|||
L+1 | Encoded frames sensitivity data. Data for each frame is located at Offset=L+1+frame sensitivity data offset×sector .smh tag size. |
|||
… | … | … | … | |
Sector N Data | … | ... | ... |
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