- Description: Base address of each
address range. All low-order bits of base address in the range
[ADDR_WIDTH-1: 0] must be zero.
- Format/Range: Bit-string, 64-bits;
each value must be less than 2 ** SI_ADDR_WIDTH
- Default Value for each range
"Dddd": ddd * 0x10000. (For unused ranges, Base Addr is
ignored.)