Internal serial interface
First Claim
Patent Images
1. A communications interface for a radio frequency device, comprising:
- a serial interface configured to receive data signals from a radio frequency front end component, the serial interface including a transmit block configured to provide data signals to at least one receive block; and
a clock generator configured to be activated to provide a first clock signal to the serial interface when first data received by the serial interface from the radio frequency front end component is to be transmitted via the serial interface to the receive block, the first clock signal being different than a second clock signal provided to the radio frequency front end component, the clock generator and the transmit block being configured to be disabled when the first data has been transmitted via the serial interface.
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Abstract
A simplified serial interface for a communications device. The serial interface includes an RF front end and a transmit block and at least one receive block located on different dies. The receive block is activated by a clock generator that is separate than the system clock. The at least one receive block can inhibit transmission of an enable signal to the receive block and inhibit operation of an oscillator of the interface.
54 Citations
19 Claims
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1. A communications interface for a radio frequency device, comprising:
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a serial interface configured to receive data signals from a radio frequency front end component, the serial interface including a transmit block configured to provide data signals to at least one receive block; and a clock generator configured to be activated to provide a first clock signal to the serial interface when first data received by the serial interface from the radio frequency front end component is to be transmitted via the serial interface to the receive block, the first clock signal being different than a second clock signal provided to the radio frequency front end component, the clock generator and the transmit block being configured to be disabled when the first data has been transmitted via the serial interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless device, comprising:
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a radio frequency front end component configured to receive input data signals and a first clock signal; a serial interface configured to receive data signals from the radio frequency front end component and configured to provide data and enable signals to at least one receive block; and a downstream device configured to receive the data from the at least one receive block and including a power on reset detector configured to determine when the at least one receive block and the downstream device are capable of receiving data, the power on reset detector controlling a switch that inhibits transmission of the enable signals until the at least one receive block and downstream device are capable of receiving data. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A wireless communications device comprising:
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an antenna; a radio frequency front end component coupled to the antenna; and a communications interface including a serial interface configured to receive data signals from the radio frequency front end component, the serial interface including a transmit block configured to provide data signals to at least one receive block, the communications interface further including a clock generator configured to be activated to provide a first clock signal to the serial interface when first data received by the serial interface from the radio frequency front end component is to be transmitted via the serial interface to the receive block, the first clock signal being different than a second clock signal provided to the radio frequency front end component, the clock generator and the transmit block being configured to be disabled when the first data has been transmitted via the serial interface.
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Specification