This register is reserved if Frame Buffers selected in the Vivado Integrated Design Environment (IDE) is less than 17 or when the address space is more than 32 (Write has no effect, read returns 0).
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X-Ref Target - Figure 2-12 
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|
Bits |
Name |
Default/Reset State |
Access |
Description |
|---|---|---|---|---|
|
31–1 |
Reserved |
0h |
RO |
Always read as zero |
|
0 |
S2MM Reg Index |
0h |
R/W |
When Frame Buffers is greater than 16 •0 = Any write or read access between 0xAC to 0xE8 accesses the Start Address 1 to 16 registers. •1 = Any write or read access between 0xAC to 0xE8 accesses the Start Address 17 to 32 registers. |