Hi Expert,
There're some questions about the below content of SPNU499C document. Hope you could explain it more clearly. Thanks!
The above is about TUV certification, an urgent case. Thanks for support in advance!
Content of SPNU499C
Best Regards
Rayna
Hello Rayna,
Please take a look at the table 6-21 in Datasheet:
Each peripheral select (PS) addresses a 1KB region. This region is then divided into four quadrants [3:0], with each quadrant being 256bytes. These quadrants are then assigned to individual peripheral module control/status registers, as specified in Table 6-21 of the datasheet.
Some peripheral register frames fit within a quadrant, while some other peripherals take two quadrants:
PS[x] frame size <= 256 bytes: 1 quadrant required for example: PS[16] for GIO
PS[x] frame size >256bytes and <= 512 bytes: 2 quadrants required for example: PS[23] for FTU, or PS[22] for HTU1 and HTU2
PS[x] frame size >512 bytes and <= 1kB: 4 quadrants required for example: PS[12] or PS[13] for flexray,
The FlexRay controller takes two complete peripheral selects, so that it uses eight quadrants.
