Mapping table accessing method, memory control circuit unit and memory storage device

    公开(公告)号:US10013187B2

    公开(公告)日:2018-07-03

    申请号:US14829648

    申请日:2015-08-19

    Inventor: Chih-Kang Yeh

    Abstract: A mapping table accessing method for a rewritable non-volatile memory module is provided. The method includes: storing a mapping record corresponding to a first physical erasing unit into the first physical erasing unit, wherein the mapping record of the first physical erasing unit is a mapping relation of physical programming units in the first physical erasing unit. The method further includes: storing a mapping record corresponding to a second physical erasing unit into the second physical erasing unit, wherein the mapping record of the second physical erasing unit is a mapping relation of physical programming units in the second physical erasing unit. A size of the mapping record of the first physical erasing unit is different from a size of the mapping record of the second physical erasing unit.

    Eye-width detector, memory storage device and eye-width detection method of data signal

    公开(公告)号:US09836121B2

    公开(公告)日:2017-12-05

    申请号:US14856563

    申请日:2015-09-17

    CPC classification number: G06F3/013 A61B3/11

    Abstract: An eye-width detector, a memory storage device and an eye-width detection method of data signal are provided. The eye-width detector includes a phase interpolator, a calibration circuit and an eye-width detection circuit. The phase interpolator receives a first clock signal and a phase control signal and output a second clock signal. The calibration circuit receives the first clock signal and the second clock signal and output a first control signal. The eye-width detection circuit receive the data signal, the first clock signal and the second clock signal and generate a first sampling value and a second sampling value. If the first sampling value and the second sampling value do not match a first condition, the eye-width detection circuit outputs a second control signal; otherwise, outputs eye-width information of the data signal. Accordingly, the efficiency of the eye-width detection may be improved.

    MEMORY STORAGE DEVICE AND POWER MANAGEMENT METHOD THEREOF

    公开(公告)号:US20170329381A1

    公开(公告)日:2017-11-16

    申请号:US15210905

    申请日:2016-07-15

    Abstract: A memory storage device having a rewritable non-volatile memory module, a first connection interface unit, a second connection interface unit, a power management circuit and a memory control circuit unit is provided. When an external power supply device is electrically connected to the second connection interface unit, the power management circuit receives a second power supply voltage from the external power supply device via the second connection interface unit, supplies an operation voltage to the rewritable non-volatile memory module and the memory control circuit unit and supplies the second power supply voltage to a host device. When the external power supply device is electrically disconnected with the second connection interface unit, the power management circuit receives a first power supply voltage from the host device via the first connection interface unit and supplies the operation voltage to the memory control circuit unit and the rewritable non-volatile memory module.

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