TPS65987D: 能否在CC信号不断开重连的情况下进行PDO的协商

现在我使用TPS65987D做与显示器PDO协商

在使用 IIC 写 TPS65987D 的 0x33寄存器设置PDO的时候，需要断开CC信号重连，显示器那边才会重新协商到我设置的值，有没有什么办法不断开CC信号重而让他们重新协商输出到我设置的VBUS

Amy Luo：

您好，

感谢您对TI产品的关注！为更加有效地解决您的问题，我将您的问题发布在了E2E英文论坛上，将由资深的英文论坛工程师为您提供帮助，收到回复后，若有疑问您可以跟进英文工程师的回复：

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1119097/tps65987d-can-pdo-be-negotiated-without-the-cc-signal-being-repeatedly-opened-and-reconnected

,

Amy Luo：

E2E英文论坛工程师已回复：

After the 0x33 Sink Capabilities register has been updated, the customer can use the 'GSrC' 4CC command to force the connected device to re-send its source capabilities and renegotiate a new PD contract with the updated Sink Capabilities.

The flow would be as follows:

1. Updated Sink Capabilities in 0x332. Send 'GSrC' 4CC Command3. New PD contract will be negotiated