摘要:
A filter tuning circuit for a wireless communication system is provided. A filter tuning circuit includes a comparator and a counter which control a transconvertance value of a differential transconverter to tune a filter.
摘要:
A filter tuning circuit for a wireless communication system is provided. A filter tuning circuit includes a comparator and a counter which control a transconvertance value of a differential transconverter to tune a filter.
摘要:
There is provided a digital MAC apparatus for an IEEE 802.15.4 based communication system, which is implemented in hardware. The digital MAC apparatus having a processor of a Wireless Personal Area Network (WPAN) communication system and a data bus transferring data includes a frame generating unit generating and outputting a frame on the basis of input data; a frame parsing unit parsing an input frame input through the data bus, and generating and outputting a control signal or transmission and receipt data; and a controller operating at least one of the frame generating unit and the frame parsing unit according to the generated control signal, and communicating the output frame or data with the processor according to the operation.
摘要:
An apparatus for controlling IEEE 802.15.4 physical layer operation state is provided. The physical layer operation state controlling apparatus defines an operation state of a physical layer including a Hardwired Low-MAC (HL-MAC) device in which functions of IEEE 802.15.4 MAC layer are hardwired, and includes a state module for controlling the operation state of the physical layer. The state module includes a Finite State Machine (FSM) for, when receiving an event for the operation state of the physical layer, transiting to a state module corresponding to the event and controlling the operation state of the physical layer; and an interrupt handler for converting an interrupt received from the physical layer to the event corresponding to a register of the state module and sending the event to the FSM. Hence, by means of the state machine for the IEEE 802.15.4 PHY, the IEEE 802.15.4 physical layer operation state can be controlled to optimize the operations of the upper MAC.
摘要:
An apparatus for controlling IEEE 802.15.4 physical layer operation state is provided. The physical layer operation state controlling apparatus defines an operation state of a physical layer including a Hardwired Low-MAC (HL-MAC) device in which functions of IEEE 802.15.4 MAC layer are hardwired, and includes a state module for controlling the operation state of the physical layer. The state module includes a Finite State Machine (FSM) for, when receiving an event for the operation state of the physical layer, transiting to a state module corresponding to the event and controlling the operation state of the physical layer; and an interrupt handler for converting an interrupt received from the physical layer to the event corresponding to a register of the state module and sending the event to the FSM. Hence, by means of the state machine for the IEEE 802.15.4 PHY, the IEEE 802.15.4 physical layer operation state can be controlled to optimize the operations of the upper MAC.