GTZC1 TZSC memory 2 sub-region B watermark register
| SUBB_START | Start of sub-region B in region x This field defines the address offset of the sub-region B, to be multiplied by the granularity defined in Table30, versus the start of the region x. External memories that are watermark controlled, start fully non-secure at reset when TZEN=0xC3. When TZEN=0xB4, external memories start fully secure (inverted reset value). |
| SUBB_LENGTH | Length of sub-region B in region x This field defines the length of the sub-region B, to be multiplied by the granularity defined in Table30. When SUBB_START + SUBB_LENGTH is higher than the maximum size allowed for the memory, a saturation of SUBB_LENGTH is applied automatically. If SUBB_LENGTH = 0, the sub-region B is disabled.(SREN bit in GTZC1_TZSC_MPCMWxBCFGR is cleared). |