两片BQ769x0的通信问题

使用两片BQ769x0组成大于10串以上的电池组管理系统时，高位的IIC总线经过隔离芯片后，可以并接到低位的IIC总线，再接入到主控MCU上吗？

也就是说，每片BQ769x0是否有独立的片选地址，可供MCU片选，以避免占有MCU的两个IIC通信口。

TI有个参考设计，如下：

http://www.ti.com/tool/TIDA-01093?keyMatch=Bq76930&tisearch=tidesigns

Description

High serial cell count battery (>15s) systems are becoming more and more common for industrial applications. These applications are cost sensitive and require a simple solution that includes monitoring, protection, and control or even SOC (State of Charge) information rather than only basic independent hardware protection. This design offers a platform for the complete pack side solution. All independent hardware protection features are incorporated from the bq76930 and a robust communication interface is implemented for host device to read the battery information.

Features

• Supports 16-Series to 20-series cell application
• All independent hardware protecting function inherited from bq76930
• Charger insertion detectable
• Load removal detectable
• Isolated differentiated CAN PHY for communication with host system
• Supports up to 128k baud rate UART communication with external host

谢谢！推荐的资料看了。但还是有疑问，高位的IIC可以通过关断隔离器电源实现，但低位的IIC因为是直通的。这样的话，如果只和高位的IIC通讯还是无法实现，除非低位的也加个隔离器，是这样的吗？