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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32W108HB датащи(PDF) 41 Page - STMicroelectronics |
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STM32W108HB датащи(HTML) 41 Page - STMicroelectronics |
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41 / 278 page  STM32W108HB STM32W108CC STM32W108CB STM32W108CZ Radio frequency module Doc ID 16252 Rev 14 41/278 The primary features of the MAC are: ● CRC generation, appending, and checking ● Hardware timers and interrupts to achieve the MAC symbol timing ● Automatic preamble and SFD pre-pending on Tx packets ● Address recognition and packet filtering on Rx packets ● Automatic acknowledgement transmission ● Automatic transmission of packets from memory ● Automatic transmission after backoff time if channel is clear (CCA) ● Automatic acknowledgement checking ● Time stamping received and transmitted messages ● Attaching packet information to received packets (LQI, RSSI, gain, time stamp, and packet status) ● IEEE 802.15.4 timing and slotted/unslotted timing 5.5 Packet trace interface (PTI) The STM32W108 integrates a true PHY-level PTI for effective network-level debugging. It monitors all the PHY Tx and Rx packets between the MAC and baseband modules without affecting their normal operation. It cannot be used to inject packets into the PHY/MAC interface. This 500 kbps asynchronous interface comprises the frame signal (PTI_EN, PA4) and the data signal (PTI_DATA, PA5). 5.6 Random number generator Thermal noise in the analog circuitry is digitized to provide entropy for a true random number generator (TRNG). The TRNG produces 16-bit uniformly distributed numbers. The Software can use the TRNG to seed a pseudo random number generator (PNRG). The TRNG is also used directly for cryptographic key generation. |
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