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[zhya_2745986]

For the register mentioned in the hardware manual of S6J3400, I don't know how to configure the data bit of the register.

[HongyanW_86]

Could you please clarify which register you need to configure? Are you using Cypress SampleSW?

[zhya_2745986]

For example, if MCU enters sleep mode, how does the register controlling IO be configured?

[HongyanW_86 · Accepted solution]

Do you mean the HOLDIO_PDx and PSS port control register?

If yes, you can configure register SYSC0_SPECFGR. Here is an example:

    // Select PSS IO hold and high-z

    SYSC0_PROTKEYR =      0x5cacce55 ; // Unlock

    SYSC0_SPECFGR =       0x01000200; // HOLDIO_PD2=1, PSSPADCTRL=0, IO3RSTC=0, IO35RSTC=0, EXVRSTCNT=1

For S6J3400, please kindly refer to the register SYSC0_SPECFGR description marked with LP_type in S6J3400 Hardware Manual Platform part (002-07884 Rev. *D).

http://www.cypress.com/file/219516/download

Best regards,

Amy Wang