82US15W Datasheet, PDF (20/22 Pages) Intel Corporation – Intel® System Controller Hub

Specification Clarifications
Specification Clarifications
Clarification of the CSS bit behavior in the SDIO Present State Register.
15
SDIO/MMC (D30:F0, F1, F2)
15.3.10 PSTATE—Present State Register
Default
Bit
and
Access
Description
Card State Stable (CSS): This bit reflects the stability of the SD_CD#
signal and can be used for testing. This state of this bit is not altered by the
0
17
RO
Software Reset register.
0 = Card is not inserted or SD_CD# is not stable
1 = Card is inserted and SD_CD# is stable
20
Specification Update