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DS90UB949后面的948和触摸ic的i2c地址确认

大哥们好,公司有个产品iintel cpu-----串行DS90UB949--解串DS90UB948-----LVDS显示,cpu与949是i2c连接,请问我要去初始化948和触摸ic怎么通过i2c初始化ia,948的i2c地址是通过949去配的还是直接用948的i2c地址