关于BQ2060 SMBus 协议

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如上所示:
BQ2060在SMBus协议的描述中是:主机在开始时序完成后,先发送Device address 0001011,再加上一位R/W位.但在时不带PEC的时序图中,当Read word 时,跟在Device address后的仍是0(W).很是不解,
请教对此有研究的老师们,是错了,还是其它意思?
谢谢!