Other Parts Discussed in Thread: TUSB422
I would like to know some details about Type C to C active cable solution and need your help. Lenovo dock team is finding cable solution. We have promoted TUSB544.
For C-C active cable solution(not Type C to DP/HDMI), I didn’t find specific design from ti.com. I find TI and Cypress block diagram as below.
In my understanding, CCG2 integrates MCU and CC controller(MSP430+TUSB422), and CCG2 don’t need LDO as its wide vdd range. Is it correct?
Have you seen any more specific schematics/documents in this application?
For TUSB544: I can see FLIP CTL0 CTL1 is controlled by PD controller(Or TUSB422+MSP430). My question is: what’s the three pins function in c-c active cable application? In my understanding, CC controller can configure TX/RX to USB3.1 or Alt mode.
- For example, when NB connects monitor through type C-C cable. Is there any change on the four TX/RX signal lane in PD alt mode negotiation? My understanding is NB and monitor switches lanes at their sides, and nothing happens in cable lanes. Is my understanding correct?
- In c-c cable application, redriver EQ gain is settled by resistor divider. Will FLIP,CTL0,CTL1 control EQ gain when the cable design fix?
- Can customer use TUSB544 without TUSB422 or MSP430 for EQ setting? Just like TUSB544EVM http://www.ti.com/lit/ug/sllu260/sllu260.pdf