DS125RT410 原理图设计&调试记录2

1. 前言

承接上篇

2. 调试记录

（1）使用默认设置的十六进制文件从E2E另一个帖子，如下 DS125DF410_example_EEPROM

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

（2）使用I2C expert在I2C总线上以I2C模式搜索设备， 只找到1个RT410(0x30)，找不到2个RT410(0x32) 有什么问题吗

（3） 如果只使用EEPROM的I2C Expert，总共会找到8个地址!这正常吗?

EEPROM是CAT24C08WI-GT3

（4）开机时未进入EEPROM模式(主模式)，且ALL_DONE引脚高，I2C也高

I2C波形如下图所示 时钟:

Data:

目前RT410s到现在还不能用

3. 结论

确认下面重定时器的引脚的硬件设置

EN_SMB READ_EN_N addr0, addr1, addr2, addr3

看起来可能在I2C软件GUI中使用了7位寻址 如果是这种情况，则必须相应地映射retimer从地址 例如，SMBus地址0x30在使用7位寻址时对应于0x18

RT410的一个问题，是否支持SAS ? DS125RT410不支持SAS