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jiajun
Contributor III

Hi,

I have a question when reading the AN13182 document. As shown in the figure below, it explains how to enter the OTP mode and read the corresponding status by register to determine whether the mode entry is successful. However, I did not see the register mentioned in the VR5510 data sheet. If I have misunderstood, please help me to correct how to determine whether the mode has entered.

jiajun_0-1728646563595.png

jiajun_1-1728646726665.png

VR5510 

 

 

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14,416 Views
guoweisun
NXP TechSupport
NXP TechSupport

VR5510 | Multi-Channel PMIC for Automotive Applications | NXP Semiconductors

你自己看看能下载吗?我不支持软件这里,假如这里没用那基本就没有了,你搞清进入standby的逻辑就可以了,自己写程序只能

guoweisun_0-1729052851680.png

 

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14,658 Views
guoweisun
NXP TechSupport
NXP TechSupport

请问您是什么公司的?尽量避免用自己的邮箱提问这样优先级非常低,我建议您用公司邮箱提问在这里或者下面:

Home (nxp.com)

 

读取OTP内部的寄存器的值,目前不会对客户开放

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14,653 Views
jiajun_cheng
Contributor III

Hi, @guoweisun 

This is registered with my company email address, is this ok?

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14,648 Views
guoweisun
NXP TechSupport
NXP TechSupport

Home (nxp.com)

以后建议用上面的链接提问不是public的别人看不到只有您自己看的到。

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14,643 Views
jiajun_cheng
Contributor III

那意思是后面只能用support.nxp.com这个链接来提问,https://community.nxp.com/ 提问现在已经不支持了吗?

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14,640 Views
guoweisun
NXP TechSupport
NXP TechSupport

不是,都可以用,我建议您用我推荐的那个方式

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14,636 Views
jiajun_cheng
Contributor III

好的,谢谢提醒!

还是最开始的问题,既然OTP寄存器不能开放,那么怎么判断进入了OTP模式

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14,632 Views
guoweisun
NXP TechSupport
NXP TechSupport

不支持你用当前的板子直接读取OTP相关的寄存器在已经做过OTP的VR5510芯片。

我不知道您的用意是什么?您是要自己做OTP吗?

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14,629 Views
jiajun_cheng
Contributor III

可能我描述的有问题,我的初衷是想进入standby模式,我在VR5510的手册又看到下面这张图,上面写道从INIT_FS/NORMAL_FS状态进入standby模式需要Valid_STBY,其中VALID_STBY  = (STBY_SAFE_DIS_OTP=1 and STBY pintransition and ABIST1_ok)

jiajun_cheng_0-1728699066409.png

于是我查看了STBY_SAFE_DIS_OTP解释,是属于CFG_2_OTP寄存器,所以我想进入OTP模式来设置这个寄存器

jiajun_cheng_1-1728699438583.png

最后,如果我进入standby模式的方法是有误的,请帮忙指导下,怎么进入standby模式;另外我们采购回来的VR5510芯片是没有烧录过的

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14,624 Views
guoweisun
NXP TechSupport
NXP TechSupport

看看下面,SBC初始化以后release了RSTB/FS0B/FS1B以后有条件进入standby 模式这个条件下面圈出来了:

guoweisun_0-1728700949295.png

 

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14,581 Views
jiajun_cheng
Contributor III

好的,我会认真查看这个流程的

还想请问下,关于控制VR5510进入standby模式,有没有指导的示例,我目前只看到一个关于Pmic的示例,该示例里面只是初始化了Pmic,没有做其他的处理

jiajun_cheng_0-1728712071276.png

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14,576 Views
guoweisun
NXP TechSupport
NXP TechSupport

我没有仔细的看过软件RTD这些驱动,这个SBC比较难的就是初始化以及喂狗其他的都很简单根据流程图走就OK,不难

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14,511 Views
jiajun_cheng
Contributor III

还有个问题确认下,在下面这两张图中,是不是可以说明,在进入了debug模式后,VDDOTP引脚拉低之前可以对OTP寄存器进行读写;在VDDOTP拉低之后,就不能访问OTP寄存器了是吗

jiajun_cheng_1-1728977233253.png

 

jiajun_cheng_0-1728977165979.png

 

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14,507 Views
guoweisun
NXP TechSupport
NXP TechSupport

OTP相关的寄存器不太支持可以去读写做这样的一般的操作。

OTP emulation 模式下是可以操作这个OTP的寄存器的读写,您刚才的图有这个时序,但是一旦您的产品量产就是说做过了OTP以后在正常的产品板子上就不建议客户去读写OTP的寄存器,读写也是无效的。

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14,503 Views
jiajun_cheng
Contributor III

好的,那我基本知道了,谢谢

然后还有个问题,在之前的回复中你说到,进入standby条件是反转stby pin,我在S32DS的pin配置工具,他似乎不能设置电平,这个引脚只是通知引脚吗

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14,440 Views
guoweisun
NXP TechSupport
NXP TechSupport

他需要一个电平的转换,通知引脚啥意思?

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14,436 Views
jiajun_cheng
Contributor III

我看这个s32ds配置工具里面,pmic_stby_mode_b这个引脚的属性都是n/a,那这个引脚还是能够跟正常引脚一样设置电平吗

jiajun_cheng_0-1729041860587.png

 

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14,430 Views
guoweisun
NXP TechSupport
NXP TechSupport

guoweisun_0-1729042590166.png

这个STBY是INPUT pin是可以被更改的

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14,420 Views
jiajun_cheng
Contributor III

好的。

那关于让s32g3和vr5510都进入stanby模式的示例有吗,我目前有看到一个”S32G_Standby_Demo_V4-20221116-Eng.pdf“文档,但是里面描述的demo,我在官网没找到,请问你这边有对应的示例可以提供吗?

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14,417 Views
guoweisun
NXP TechSupport
NXP TechSupport

VR5510 | Multi-Channel PMIC for Automotive Applications | NXP Semiconductors

你自己看看能下载吗?我不支持软件这里,假如这里没用那基本就没有了,你搞清进入standby的逻辑就可以了,自己写程序只能

guoweisun_0-1729052851680.png

 

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14,401 Views
jiajun_cheng
Contributor III

好的,谢谢你的支持,感谢!

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