https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324674#M5037 <P>Hi，NXP<BR /><BR />According to my understanding, the FS26 regulates through OTP configuration, and then the hardware automatically enables the output, such as LDO1 and LDO2. I see that the register M_REG_CTRL1 has the function of enabling LDO1. What is the role of this feature? In what circumstances is it used?<BR /><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="企业微信截图_17722683309117.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/378055i010A571C76ACF135/image-size/large?v=v2&amp;px=999" role="button" title="企业微信截图_17722683309117.png" alt="企业微信截图_17722683309117.png" /></span><BR />Best Regards,<BR />xianlong</P> Sat, 28 Feb 2026 10:03:59 GMT wuxianlong 2026-02-28T10:03:59Z https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324674#M5037 <P>Hi，NXP<BR /><BR />According to my understanding, the FS26 regulates through OTP configuration, and then the hardware automatically enables the output, such as LDO1 and LDO2. I see that the register M_REG_CTRL1 has the function of enabling LDO1. What is the role of this feature? In what circumstances is it used?<BR /><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="企业微信截图_17722683309117.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/378055i010A571C76ACF135/image-size/large?v=v2&amp;px=999" role="button" title="企业微信截图_17722683309117.png" alt="企业微信截图_17722683309117.png" /></span><BR />Best Regards,<BR />xianlong</P> Sat, 28 Feb 2026 10:03:59 GMT https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324674#M5037 wuxianlong 2026-02-28T10:03:59Z https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324707#M5038 <P>OTP可以设定LDO是否开启，默认不动的情况下比方说OTP把她关掉了那么默认下就是关掉的，不过你也可以在上电以后通过SPI 设置你说的哪个寄存器去更改ON/OFF。</P> Sat, 28 Feb 2026 10:34:02 GMT https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324707#M5038 guoweisun 2026-02-28T10:34:02Z https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324708#M5039 <P>OTP可以设定LDO是否开启，默认不动的情况下比方说OTP把她关掉了那么默认下就是关掉的，不过你也可以在上电以后通过SPI 设置你说的哪个寄存器去更改ON/OFF。</P> Sat, 28 Feb 2026 10:34:02 GMT https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324708#M5039 guoweisun 2026-02-28T10:34:02Z https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324747#M5041 Thank you very much. Mon, 02 Mar 2026 01:15:36 GMT https://community.nxp.com/t5/Power-Management/Problems-with-the-FS26-enable-regulator/m-p/2324747#M5041 wuxianlong 2026-03-02T01:15:36Z