RAM blocks which are accessible from both the CPU and DMA are called global shared RAMs (GSx RAMs). Both the CPU and DMA have full read and write access to these memories. Table 6-7 shows the features of the GSx RAM.
|CPU (FETCH)||CPU (READ)||CPU (WRITE)||CPU.DMA (READ)||CPU.DMA (WRITE)|
All GSx RAM blocks have parity.
The GSx RAMs have access protection (CPU write/CPU fetch/DMA write).