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BQ40Z50: 单独通过主机更改term voltage

Part Number: BQ40Z50
Other Parts Discussed in Thread: BQSTUDIO

1、我们使用i2c读写工具i2ctransfer,尝试读写ic某个寄存器的值,目前发现有些寄存器的值无法读写。例如 "i2ctransfer -f -y 9 w1@0x0b 0x0d r1"指令可以读取到0x0d寄存器的值为"0x19"且准确;而有些十六位寄存器地址的值无法读取,例如 "i2ctransfer -f -y 9 w2@0x0b 0x47 0x7e r2"指令无法读取到0x477e寄存器的值,且提示"Error: Sending messages failed:Remote I/0 error",请问如何使用i2c工具正常读写0x477e寄存器?
2、请提供软件上单独修改"Term Voltage"寄存器的方法或协助。