Part Number:TPS2544
My customer uses TPS2544 in their MB. When the MB states goes from S0 to S3, S4 or S5, we would switch the TPS2544 work mode from CDP (1111) to SDP1 (0101/0), and this action have done in the process of entering S3, S4 or S5. Because the TPS2544 have discharge the power about 2s. The Keyboard/ Mouse on this USB port will be remove first, and link again when the power rise again. Because this action makes the Keyboard/ Mouse unable to wake up this platform. But I see in DS, in SDP1 mode, it could be waked up through KB/MS. please help to double check this issue?( question1 )
question2 : If the MB states goes from S0 to S3, S4 or S5, we switch the work mode from CDP (1111) to SDP2 (1110), any risk?
The SCH have uploaded. please see the attachment. (Please visit the site to view this file)
Please note that: When the MB enter into S3, S4 mode from S0. USB Power will be keep always. (Because the wake up function support)