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The PIDR4 register is part of the set of peripheral identification registers.
The PIDR4 register characteristics are:
The following figure shows the bit assignments.
The following table shows the bit assignments.
Table 9-319 PIDR4 register bit assignments
Reserved bit or field with Should-Be-Zero-or-Preserved (SBZP) behavior.
Indicates the memory size that is used by this component. Returns 0 indicating that the component uses an UNKNOWN number of 4KB blocks. Using the SIZE field to indicate the size of the component is deprecated.
JEP106 continuation code. Together, with PIDR2.DES_1 and PIDR1.DES_0, they indicate the designer of the component and not the implementer, except where the two are the same.