摘要:
Systems and methods of device identifier selection are disclosed. In a particular embodiment, a method includes receiving an enumeration message via a host interface of a device operatively coupled to a host device as well as to one or more other devices and identifying the enumeration message as a command originated by the host device or as a response message from one of the other devices. The method includes, in response to identifying the enumeration message as a command, selectively sending an enumeration response message to the host device. The enumeration response message indicates a distinctive device identifier value. The method also includes, in response to identifying the enumeration message as a response message from one of the other devices, reading from the response message an identifier value used by such other device and at least temporarily storing this identifier value at the device to enable the device to select the distinctive device identifier value.
摘要:
Techniques are presented that allow a memory card operable according to two protocols (such as a legacy protocol and newer protocol), and having a corresponding dual interface, to be used with hosts that support the new protocol as well as having backward compatibility with legacy hosts, while preventing the use of legacy cards with hosts that support the new protocol but do not support the legacy protocol. The card that supports the new protocol has a similar form factor to the legacy card, includes an indentation. A host that supports the new, but not the legacy, type card includes a mechanical structure within the attachment slot that, based on the card indentation, can distinguish the card types and prevent the non-supported card from being attached.
摘要:
Techniques are presented that allow a memory card operable according to two protocols (such as a legacy protocol and newer protocol), and having a corresponding dual interface, to be used with hosts that support the new protocol as well as having backward compatibility with legacy hosts, while preventing the use of legacy cards with hosts that support the new protocol but do not support the legacy protocol. The card that supports the new protocol has a similar form factor to the legacy card, includes an indentation. A host that supports the new, but not the legacy, type card includes a mechanical structure within the attachment slot that, based on the card indentation, can distinguish the card types and prevent the non-supported card from being attached.
摘要:
Techniques are presented that allow a memory card operable according to two protocols (such as a legacy protocol and newer protocol), and having a corresponding dual interface, to be used with hosts that support the new protocol as well as having backward compatibility with legacy hosts, while preventing the use of legacy cards with hosts that support the new protocol but do not support the legacy protocol. The card that supports the new protocol has a similar form factor to the legacy card, includes an indentation. A host that supports the new, but not the legacy, type card includes a mechanical structure within the attachment slot that, based on the card indentation, can distinguish the card types and prevent the non-supported card from being attached.
摘要:
In a non-volatile memory system, test data may be retrieved by means of a circuit without the help of firmware. The circuit is triggered into action when it detects an abnormality in the processor or host interface. In such event, it formats the self test or status signals from the various blocks in the non-volatile memory system controller and sends a test message to the outside world without the assistance of the system processor or interface controller. When implemented in memory systems with multiple data lines, only one of the data lines may be utilized for such purpose, thereby allowing the testing to be performed while the system is still performing data transfer. Preferably, the system includes the test mode communication controller, which can select between a test channel and a host interface channel for the test message transfer so that the same testing may be performed when the memory system is in the test package as well as in an encapsulated package. The test message is transmitted repeatedly and the test message is structured so that it is easier for the receiver host to decipher the message without a handshake with the memory system. A communication controller preferably detects whether any of the communication channels is not used by the controller of a non-volatile memory system for sending signals and sends diagnostic signals through such channel.
摘要:
A mass storage memory card adds functionality to host devices with which it is used. In addition to the ability to store large amounts of user files and protect them from unauthorized duplication, a mass storage device according to the present invention enables near field communications with a portable electronic device that otherwise does not have such functionality. In a preferred embodiment the mass storage device has a mother/daughter configuration wherein the daughter card is a fully functioning micro-SD card that can be used independently. The mother card can be accepted in an SD card slot and communicates via the SD protocol. Whether or not the daughter card is present in the mother card, a host with the mass storage device therein will be capable of near field communications. These communications can be peer to peer or can be used to purchase goods or services as a sort of electronic wallet. A controller of the device is also operable to coordinate, control, and safeguard the financial transactions made when using the device and host as an electronic wallet.
摘要:
In a non-volatile memory system, test data may be retrieved by means of a circuit without the help of firmware. The circuit is triggered into action when it detects an abnormality in the processor or host interface. In such event, it formats the self test or status signals from the various blocks in the non-volatile memory system controller and sends a test message to the outside world without the assistance of the system processor or interface controller. When implemented in memory systems with multiple data lines, only one of the data lines may be utilized for such purpose, thereby allowing the testing to be performed while the system is still performing data transfer. Preferably, the system includes the test mode communication controller, which can select between a test channel and a host interface channel for the test message transfer so that the same testing may be performed when the memory system is in the test package as well as in an encapsulated package. The test message is transmitted repeatedly and the test message is structured so that it is easier for the receiver host to decipher the message without a handshake with the memory system. A communication controller preferably detects whether any of the communication channels is not used by the controller of a non-volatile memory system for sending signals and sends diagnostic signals through such channel.
摘要:
A memory card that adapts its operation according to the application to which it applied or the conditions under which it is operated. This allows the card to dynamical self optimize. In a first set of embodiments, the card uses host profiling where it will learn about the host during host-card interactions and the card's controller will optimize its algorithms accordingly. In another set of embodiments, the host and card will report to one another their capabilities for a quality of service negotiation. A further set of embodiments allows the storage device to memorize access sequences issued by the host under various predefined conditions, such as host reset or a power on boot sequence. The storage device can use this information to optimize operation for the expected commands. On deviation from an expected sequence, the device would memorize the new command sequence and save it, thus operating in a self-adaptive manner.
摘要:
Two or more very small encapsulated electronic circuit cards to which data are read and written are removably inserted into two or more sockets of a host system that is wired to the sockets. According to one aspect of the disclosure, command and response signals are normally communicated between the host and the cards by a single circuit commonly connected between the host and all of the sockets but during initialization of the system a unique relative card address is confirmed to have been written into each card inserted into the sockets by connecting the command and status circuit to each socket one at a time in sequence. This is a fast and relatively simple way of setting card addresses upon initialization of such a system. According to a second aspect of the disclosure, the host adapts to transferring data between it and different cards of the system over at least two different number of the data lines commonly connected between the host and all of one or more sockets, each card permanently storing a host readable indication of the number of parallel data lines the card is capable of using. This allows increasing the rate of data transfer when the need justifies an increased card circuit complexity. According to a third aspect of the disclosure, a serial stream of data is sent over a number of data lines from one to many by alternately connecting bits of the stream to a particular number of individual lines.