寄存器的只写属性设计的意义是什么?为什么要设计一个寄存器之只能写不能读?

Transistor-red 2021-11-04 10:02:53
R:Read only.
W:One time programmable and not readable.
R/W:One time programmable and readable.
W/E:Multiple writable with value kept after power failure, H/W reset assertion and any
CMD0 reset and not readable.
R/W/E:Multiple writable with value kept after power failure, H/W reset assertion and any
CMD0 reset and readable.
R/W/C_P:Writable after value cleared by power failure and HW/rest assertion (the value not
cleared by CMD0 reset) and readable.
R/W/E_P:Multiple writable with value reset after power failure, H/W reset assertion and any
CMD0 reset and readable.
W/E_P:Multiple writable with value reset after power failure, H/W reset assertion and any
CMD0 reset and not readable.

最近在读协议的时候看到寄存器的属性表,关于只能写不能读的部分十分不解,有大神能讲讲为什么会有这样的设计吗

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