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CC1312R データシート(PDF) 29 Page - Texas Instruments |
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CC1312R データシート(HTML) 29 Page - Texas Instruments |
29 / 48 page 29 CC1312R www.ti.com SWRS210 – JANUARY 2018 Submit Documentation Feedback Product Folder Links: CC1312R Detailed Description Copyright © 2018, Texas Instruments Incorporated (1) Data rates are only indicative. Data rates outside this range may also be supported. For some specific combinations of settings, a smaller range might be supported. (2) Carrier Sense can be used to implement HW-controlled listen-before-talk (LBT) and Clear Channel Assesment (CCA) for compliance with such requirements in regulatory standards. This is available through the CMD_PROP_CS radio API. . (3) Carrier Sense and Preamble Detection can be used to implement sniff modes where the radio is duty cycled to save power. 6.4 Radio (RF Core) The RF Core is a highly flexible and future proof radio module which contains an Arm Cortex-M0 processor that interfaces the analog RF and base-band circuitry, handles data to and from the system CPU side, and assembles the information bits in a given packet structure. The RF core offers a high level, command-based API to the main CPU that configurations and data are passed through. The Arm Cortex- M0 processor is not programmable by customers and is interfaced through the TI-provided RF driver that is included with the SimpleLink Software Development Kit (SDK). The RF core can autonomously handle the time-critical aspects of the radio protocols, thus offloading the main CPU, which reduces power and leaves more resources for the user application. Several signals are also available to control external circuitry such as RF switches or range extenders autonomously. The various physical layer radio formats are to an extent built as a firmware defined radio where the radio behavior is either defined by radio ROM contents or by non-ROM radio formats delivered in form of firmware patches with the SimpleLink SDKs. This allows the radio platform to be updated for support of future versions of standards even with over-the-air (OTA) updates while still using the same silicon. NOTE Not all combinations of features, frequencies, data rates, and modulation formats described in this chapter are supported. Over time, TI enables new physical radio formats (PHYs) for the device and provides performance numbers for selected PHYs in the data sheet. Supported radio formats for a specific device, including settings to use with the TI RF driver, are included in the SmartRF Studio tool with performance numbers of selected formats found in Section 5. 6.4.1 Proprietary Radio Formats The CC1312R radio can support a wide range of physical radio formats through a set of hardware peripherals combined with firmware available in the device ROM, covering various customer needs for optimizing towards parameters such as speed or sensitivity. This allows great flexibility in tuning the radio both to work with legacy protocols as well as customizing the behavior for specific application needs. Table 6-1 gives a simplified overview of features of the various radio formats available in ROM of the device. Other radio formats may be available in the form of radio firmware patches or programs through the Software Development Kit (SDK) and may combine features in a different manner, as well as add other features. Table 6-1. Feature Support Feature Main 2-(G)FSK mode High data rates Low data rates SimpleLink™ Long Range Programmable preamble, sync word and CRC Yes Yes Yes No Programmable receive bandwidth Yes Yes Yes (down to 5 kHz) Yes Data / Symbol rate(1) 20 to 1000 kbps ≤ 2 Msps ≤ 100 ksps ≤ 20 ksps Modulation format 2-(G)FSK 2-(G)FSK 4-(G)FSK 2-(G)FSK 4-(G)FSK 2-(G)FSK Dual Sync Word Yes Yes No No Carrier Sense(2)(3) Yes No No No Preamble Detection(3) Yes Yes Yes No Data Whitening Yes Yes Yes Yes |
同様の部品番号 - CC1312R |
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同様の説明 - CC1312R |
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