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cc1201 Transparent and Synchronous Serial Operation

Other Parts Discussed in Thread: CC1201

hello,
   手册中说CC1201支持向后兼容老设备Transparent and Synchronous Serial Operation,这种模式采用2wire进行通讯,这种模式下是不是可以突破最大1.25Mbps的传输限制? 毕竟像I2C采用2wire可以达到3Mbps的速度。
    看手册有几个问题,请帮忙解答下,
    一、同步serial    
    1. 在TX的时候,GPIO0必须作为输出,那这岂不是三线模式么,GPIO0TX,一个GPIO作为CLK,一个GPIO最为RX?
    2. 如果不采用同步字,则建议使用4byte前导序文,看手册里举例,
        Packet 1: 0xAA, 0xAA, 0xAA, 0xAA, Address1, Data0, Data 1, Data 2, …
 Packet 1: 0xAA, 0xAA, 0xAA, 0xAA, Address2, Data0, Data 1, Data 2, …
 Packet 1: 0xAA, 0xAA, 0xAA, 0xAA, Address3, Data0, Data 1, Data 2, …
      这种情况下,为啥设置SYNC_CFG1.SYNC_MODE = 010? 这不是又使能了同步字么?
   二、透明serial
     The rate on the GPIO is ((4 x receiver bandwidth) x
interpolation factor). 这个怎么理解?
     有没有Transparent and Synchronous Serial Operation的参考例子?