(PDF) IT8721F-DX Datasheet - Ibex Peak platform cause S3 resume fail issue

Número de pieza	IT8721F-DX
Descripción	Ibex Peak platform cause S3 resume fail issue
Fabricantes	ELITEGROUP COMPUTER SYSTEMS
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No Preview Available ! ELITEGROUP COMPUTER SYSTEMS CO., LTD. Date: 3/10/2011 Page: 1 SIO IT8721F-BX/DX in Ibex Peak platform cause S3 resume fail issue Issue Topic: Technical Issue Survey Form Prepared by: RD Department: FISH BUI/ODM1 Doc.: ECS Technical Issue Survey Form V.A Free Datasheet http://www.datasheet4u.com/ 1 page ELITEGROUP COMPUTER SYSTEMS CO., LTD. Date: 3/10/2011 Page: 5  Root cause : Power sequence between PCH core 1.05V and PWROK resume from S3 to S0 are failure.  Solution : PWROK output signal changed from pin 32 PWRGD1_30ms to pin 78 PWRGD3_150ms to meet the correctly power sequence of PCH core 1.05V stable to PWROK active specification , and configure SIO PWRGD3_150ms time t5 to 135ms from register address 2A , Bit 0=1, refer to below picture: 1)SIO connect to pin78 : 2)SIO register set address 2A,Bit 0=1 : 3)Correctly waveform with implementation of solution , PCH core 1.05V stable 106 ms to PWROK active : Doc.: ECS Technical Issue Survey Form V.A Free Datasheet http://www.datasheet4u.com/ 5 Page

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PDF IT8721F-DX Data sheet ( Hoja de datos )