US 12,189,970 B2
Initialization methods and associated controller, memory device and host
Chao-Kuei Hsieh, Hsinchu (TW)
Assigned to SILICON MOTION INC., Hsinchu County (TW)
Filed by SILICON MOTION INC., Hsinchu County (TW)
Filed on Jun. 26, 2023, as Appl. No. 18/214,427.
Application 18/214,427 is a continuation of application No. 17/843,691, filed on Jun. 17, 2022, granted, now 11,726,686.
Application 17/843,691 is a continuation of application No. 17/039,530, filed on Sep. 30, 2020, granted, now 11,409,452, issued on Aug. 9, 2022.
Application 17/039,530 is a continuation of application No. 16/251,544, filed on Jan. 18, 2019, granted, now 10,949,106, issued on Mar. 16, 2021.
Prior Publication US 2023/0350592 A1, Nov. 2, 2023
Int. Cl. G06F 3/06 (2006.01); G06F 13/42 (2006.01)
CPC G06F 3/0634 (2013.01) [G06F 3/0604 (2013.01); G06F 3/0658 (2013.01); G06F 3/0659 (2013.01); G06F 3/0679 (2013.01); G06F 13/4221 (2013.01); G06F 2213/0026 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method performed by a host for initializing a secure digital (SD) card, the SD card supporting both an SD mode and a peripheral component interconnect express (PCIe) mode, the host comprising:
a processor;
a communication interface for coupling to the SD card, comprising:
a first voltage supply contact for providing a first supply voltage;
a second voltage supply contact for providing a second supply voltage lower than the first supply voltage, wherein the second voltage supply contact is separate and distinct from the first voltage supply contact;
at least one ground contact for coupling to a ground;
at least one clock contact for transmitting a clock signal to the SD card; and
a command contact for transmitting a command to the SD card,
the method comprising:
(a) providing first supply voltage to the SD card through the first voltage supply contact for setting the SD card to the SD mode in response to determining the SD card is not in the PCIe mode and a CMD0 command for entering the SD mode is transmitted through the command contact; and
(b) providing the second supply voltage through the second voltage supply contact, and performing a PCIe linkup process with the SD card in response to determining the SD card is not in the SD mode after providing the first supply voltage and the second supply voltage; and
(c) determining that the SD card is set to the PCIe mode in response to determining the PCIe linkup process succeeds.