JAJSEF6L August 2013 – February 2019 TPS659038-Q1 , TPS659039-Q1
PRODUCTION DATA.
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In this mode, at the end of the power-up sequence, the register bit DEV_CTRL.DEV_ON is automatically set to 1 and the device remains in its ACTIVE state until this bit is cleared by the host processor.
Figure 6-22 and Figure 6-23 show the AUTODEVON mode timing diagrams.
The DEV_ON bit can also be configured so that it is not auto-updated (set to 1) at the end of the power-up sequence. In this case, the device behaves similarly to the POWERWHOLD mode, except the host has control over it using the DEV_CTRL.DEV_ON register bit instead of the POWERHOLD terminal. Therefore, to keep the device active, the host must set and keep this bit at 1.