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TDA4VL-Q1: Questions about 'register overlay'

Part Number: TDA4VL-Q1

Hi there,

When I read the j721s2 register documentation, I find that different registers occupy the same address. For example, SEC_MMR_CLSTR0_CORE0_DBG_CFG and SEC_MMR_PID have the same address 0x45944000h. What is the meaning of 'region'? SEC_MMR_CLSTR0_CORE0_DBG_CFG is in region 2 'cfg2' while SEC_MMR_PID in region 0 'cfg0'. I cannot find any references about this 'region' concept and 'register overlay' explanation. Could you please help me to clarify this? Thanks!