Dear Ladies and Gentlemen,
I am currently using your TUSB4041I device. I want to configure the device via SMBus. I connected the SMBus to my microcontroller, and over this device I want to configure the TUSB4041I. First of all, here is my hardware configuration: GANGED – pull down via 1K Resistor; FULLPWRMGNT – pull down via 1K Resistor; SMBUS# - pull down via 1K resistor, CLK and DATA pull up via 1K resistor to 3V3. I assume, the device is in SMBus slave mode with Slave Address 0x88/0x89. Now I want to read a register from the device, I send a StartCondition, WriteAddress,RegisterOffset,StartCondition,ReadAddress,StopCondition. I never got a acknowledge from the device. I have no other devices connected to the bus. I also checked the bus with my scope, if StartCondition and Addresses are ok. These are all ok except the acknowledge from TUSB4041I. May be you have an further idea, why TUSB4041I do not answer on the bus with an acknowledge.
