Low Power RF & Wireless Connectivity

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Low Power RF & Wireless Connectivity

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  • Wiki Page: DN505 RSSI Interpretation and Timing

    Glenn B
    The Received Signal Strength Indicator is a measure of the RF power input to the transceiver. The RSSI value is based on the gain setting in the RX chain and the measured signal level in the channel. In RX mode, the RSSI value can be read continuously from the RSSI status register until the demodulator...
    on Feb 24, 2012

  • Wiki Page: DN504 FEC Implementation

    Glenn B
    This document gives an overview of the FEC implementation in the CC1100, CC1101, CC1110, CC1111, CC1150, CC2500, CC2510, CC2511, and CC2550. http://www.ti.com/lit/swra113
    on Feb 24, 2012

  • Wiki Page: DN502 CRC Implementation

    Glenn B
    This document gives an overview of the CRC implementation for the CC1100, CC1101, CC1110, CC1111, CC1150, CC2500, CC2510, CC2511, and CC2550. http://www.ti.com/lit/swra111
    on Feb 24, 2012

  • Wiki Page: Dn402 Simple Audio Loopback Using CC251X

    Glenn B
    The LPRF SoCs contains an ADC, a DAC and an I2S interface making it suitable for voice quality audio applications without using an external codec. The following design note shows how a simple mono loopback code can be implemented with μlaw encoding / decoding. http://www.ti.com/litv/pdf/swra138
    on Feb 24, 2012

  • Wiki Page: DN300 SmartRF04EB Troubleshooting

    Glenn B
    This design note describes troubleshooting guidelines to solve problems related to communication with the SmartRF®04EB. A list of checkpoints presents questions that are normally asked when providing support for SmartRF®04EB. http://www.ti.com/lit/swra105
    on Feb 24, 2012

  • Wiki Page: DN119 Asynchronous Serial Mode for CC111xFx and CC251xFx

    Glenn B
    The purpose of this design note is to show how the CC111xFx and CC251xFx can be configured for asynchronous serial mode. This mode can be used in applications that need to transmit and/or receive data packets not fitting with the standard packet format supported by the CC111xFx and CC251xFx. http...
    on Feb 24, 2012

  • Wiki Page: DN116 Clearing Module Interrupt Flags in LPW SoC Devices

    Glenn B
    The traditional software method for clearing module interrupt flags in TI’s 8051-based low power wireless System-on-Chip (LPW SoC) devices can unintentionally mask other interrupt flags. Depending on the peripheral and the application, these masked or missing module interrupts can lead to unexpected...
    on Feb 24, 2012

  • Wiki Page: DN115 Using PWM for Dimmer Function in LED Lighting

    Glenn B
    This design note shows how to use CC251x PWM for dimmer functions in LED lighting applications. As the popularity of LED lighting increases, the CC251x single chip solution not only provides the wireless remote control functions but also dimmer function by using one of its built-in PWMs. By configuring...
    on Feb 24, 2012

  • Wiki Page: DN114 Test Signals For Debug Purpose in CC111xFx, CC251xFx and CC243x

    Glenn B
    The LPRF SoCs from Texas Instruments contains a few test signals useful to debug applications. These signals are for test purpose only and should not be used in the final application. http://www.ti.com/lit/swra241
    on Feb 24, 2012

  • Wiki Page: DN112 Using UART in CC111xFx CC243x and CC251xFx

    Glenn B
    This design note describes the key elements and simple usage of the CC111xFx/CC243xFx/CC251xFx/CC253xFx USART peripheral in UART mode. The main objective is to explain the CC111xFx/CC243xFx/CC251xFx/CC253xFx software required to operate the UART, with and without DMA support. The UART implements asynchronous...
    on Feb 24, 2012

  • Wiki Page: DN113 CC111xFx CC243xFx CC251xFx SPI Interface

    Glenn B
    This design note describes how to use the SPI peripheral for the Texas Instruments Low Power RF SoCs. http://www.ti.com/lit/swra223
    on Feb 24, 2012

  • Wiki Page: DN111 Current Consumption for a Polling Receiver

    Glenn B
    The purpose of this design note is to show how to optimize the current consumption for a polling receiver based on some of the digital features of the CC1100, CC1101 and CC2500, such as WOR and RSSI. The design note will also show how a polling receiver can be implemented using the CC1110/CC1111Fx...
    on Feb 24, 2012

  • Wiki Page: DN110 Main Radio Control State Transition Times

    Glenn B
    The CC1110Fx/CC1111Fx and CC2510Fx/CC2511Fx have built-in state machines called main radio controller (MARC) which are used to switch between operation states (modes). Changing between states is done either by using command strobes or by internal events such as completing the transmission of a packet...
    on Feb 24, 2012

  • Wiki Page: DN109 Using I2S in CC111xFx and CC251xFx

    Glenn B
    This design note describes the key elements and simple usage of the industry standard CC111xFx/CC251xFx I2S peripheral. The main objective is to explain the CC111xFx/CC251xFx software required to operate the I2S, with and without DMA support. http://www.ti.com/lit/swra183
    on Feb 24, 2012

  • Wiki Page: DN107 DMA and Radio Configuration

    Glenn B
    The purpose of this design note is to describe how the DMA should be configured for the different packet formats supported by the radio. http://www.ti.com/lit/swra164
    on Feb 24, 2012

  • Wiki Page: DN106 Power Modes in CC111xFx, CC243x, and CC251xFx

    Glenn B
    This design note combines relevant information from the CC111xFx/CC251xFx/CC2430 data sheets, and CC111xFx/CC251xFx errata notes, in order to compile all key information regarding CC111xFx/CC251xFx/CC243x power mode. The main objective is to explain the CC111xFx/CC251xFx/CC243x software instructions...
    on Feb 24, 2012

  • Wiki Page: DN105 Upgrade from CC2510/11 Preview to Released Part

    Glenn B
    Design changes were made to the released part CC2510/11 rev. E to address weaknesses in the preview part rev. D. These changes impact certain aspects of both software and hardware development for the devices. This document highlights the changes that need to be made to a design with rev. D in order to...
    on Feb 24, 2012

  • Wiki Page: DN102 SoC Temperature Sensor

    Glenn B
    The LPRF SoCs contain a temperature sensor which is connected to the ADC. By setting the ADC to sample the voltage delivered from the temperature sensor, the temperature can easily be calculated. http://www.ti.com/lit/swra101
    on Feb 24, 2012

  • Wiki Page: DN101 Using the ADC to Measure Supply Voltage

    Glenn B
    The LPRF SoCs contain a feature for sampling VDD/3 using the ADC. By setting the ADC to sample VDD/3 with 1.25 V as internal voltage reference, VDD can easily be calculated. http://www.ti.com/lit/swra100
    on Feb 24, 2012

  • Wiki Page: DN029 CC2510 with half wave Pinyon Antenna Reference Design

    Glenn B
    This document describes a PCB antenna designed for 2.4 GHz operation. The antenna is an IP based solution from Pinyon and can be used with all transceivers and transmitters from Texas Instruments, which operates in the 2.4 GHz frequency band. Maximum gain is measured to be 6.33 dBi and the antenna size...
    on Feb 16, 2012

  • Wiki Page: DN028 CC2510 with ¼ wave Pinyon Antenna Reference Design

    Glenn B
    This document describes a PCB antenna designed for 2.4 GHz operation. The antenna is an IP based solution from Pinyon and can be used with all transceivers and transmitters from Texas Instruments, which operates in the 2.4 GHz frequency band. Maximum gain is measured to be 5.79 dBi and the antenna size...
    on Feb 16, 2012

  • Wiki Page: DN021 CC2500 and CC2510/CC2511 Sensitivity versus Frequency Offset and Crystal Accuracy

    Glenn B
    This design note provides plots of CC2500 sensitivity versus frequency offset for different data rates. The results are also applicable for CC2510/CC2511. The required crystal accuracy is calculated from these plots. http://www.ti.com/lit/swra181
    on Feb 16, 2012

  • Wiki Page: DN015 Permanent Frequency Offset Compensation

    Glenn B
    Due to component inaccuracy (e.g. crystal drift/tolerance) an RF link might suffer a certain frequency offset between transmitter and receiver, which again could cause degraded sensitivity and link performance/range. The CC11xx/CC25xx counteracts this by using a built-in frequency offset compensation...
    on Feb 16, 2012

  • Wiki Page: DN007 2.4 GHz Inverted F Antenna

    Glenn B
    This document describes a PCB antenna design that can be used with all 2.4 GHz transceivers and transmitters from Texas Instruments. Maximum gain is measured to be +3.3 dB and overall size requirements for this antenna are 25.7 x 7.5 mm. Thus, this is a compact, low cost and high performance antenna...
    on Feb 2, 2012

  • Wiki Page: DN004 Folded Dipole Antenna for CC25xx

    Glenn B
    This document describes a folded dipole PCB antenna design that can be used with the following products from Texas Instruments: CC2500 CC2550 CC2510 CC2511 Maximum gain is measured to be 7.4 dB and overall size requirements for this antenna is 46 x 9 mm. Thus this is a compact, low...
    on Feb 2, 2012
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