Abstract:
A universal asynchronous receiver/transmitter (UART) interface is disclosed. The UART interface may include a configurable asynchronous receiver and transmitter unit; and a configurable state machine, wherein the state machine allows configuration of the receiver and transmitter unit to support various baud rates and provide for start bit and stop bit configuration, wherein the state machine is further configurable to automatically support a plurality of communication protocols.
Abstract:
A method for hot swapping program code includes defining a predetermined range of new code from which to execute; identifying from the new code one or more system components which require a reinitialization or reset; reinitializing or resetting the one or more system components; and executing the new code.
Abstract:
An apparatus may include a processor. The apparatus may include a memory communicatively coupled to the processor. The apparatus may include a memory control circuit (MCC). The MCC may be configured to define a protected portion of the memory, wherein the protected portion of the memory is configured for read-only access by the processor, increase a size of the protected portion of the memory, and, after the increase in size of the protected portion of the memory, prevent decreases of the size of the protected portion of the memory.
Abstract:
A multi-boot device capable of booting from a plurality of boot devices, each storing a boot image. The multi-boot device determines which boot device to load based on sequence numbers assigned to each of the boot devices. Some embodiments will make this determination using only hardware operations. The multi-boot device compares the sequence numbers of the available boot devices in order to determine the boot image to be loaded. The address of the selected boot image is then mapped to the device's default boot vector. The remaining images are likewise mapped to a secondary boot memory. The device then boots from the default boot vector. The user can change the boot device to be loaded by modifying one or more of the boot sequence numbers. The boot images can be updated without resetting the device by switching execution to and from boot images in the secondary boot memory.
Abstract:
A multi-boot device capable of booting from a plurality of boot devices, each storing a boot image. The multi-boot device determines which boot device to load based on sequence numbers assigned to each of the boot devices. Some embodiments will make this determination using only hardware operations. The multi-boot device compares the sequence numbers of the available boot devices in order to determine the boot image to be loaded. The address of the selected boot image is then mapped to the device's default boot vector. The remaining images are likewise mapped to a secondary boot memory. The device then boots from the default boot vector. The user can change the boot device to be loaded by modifying one or more of the boot sequence numbers. The boot images can be updated without resetting the device by switching execution to and from boot images in the secondary boot memory.
Abstract:
A universal asynchronous receiver/transmitter (UART) module is disclosed. The UART module may include a receiver unit being clocked by a programmable receiver clock configured to sample an incoming data signal and comprising a counter clocked by said receiver clock, wherein the counter is reset to start counting with every falling edge of the data signal and to trigger a BRK detection signal if the counter reaches a programmable threshold value.
Abstract:
A universal asynchronous receiver/transmitter (UART) module is disclosed. The UART module may include an edge detector coupled with a data line of the UART module, wherein the edge detector resets a counter on a rising and a falling edge.
Abstract:
An apparatus may include a processor. The apparatus may include a memory communicatively coupled to the processor. The apparatus may include a memory control circuit (MCC). The MCC may be configured to define a protected portion of the memory, wherein the protected portion of the memory is configured for read-only access by the processor, increase a size of the protected portion of the memory, and, after the increase in size of the protected portion of the memory, prevent decreases of the size of the protected portion of the memory.
Abstract:
A universal asynchronous receiver/transmitter (UART) module is disclosed. The UART module may include an edge detector coupled with a data line of the UART module, wherein the edge detector resets a counter on a rising and a falling edge.
Abstract:
A universal asynchronous receiver/transmitter (UART) module is disclosed. The UART module may include a receiver unit being clocked by a programmable receiver clock configured to sample an incoming data signal and comprising a counter clocked by said receiver clock, wherein the counter is reset to start counting with every falling edge of the data signal and to trigger a BRK detection signal if the counter reaches a programmable threshold value.