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MC13233C Arkusz danych(PDF) 8 Page - Freescale Semiconductor, Inc |
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MC13233C Arkusz danych(HTML) 8 Page - Freescale Semiconductor, Inc |
8 / 38 page MC1323x Advance Information, Rev. 0.0 8 Freescale Semiconductor 3.1 RF Interface and Usage The MC1323x RF interface provides a bi-directional, differential port that connects directly to a balun. The balun connects directly to a single-ended antenna and converts that interface to a full differential, bi-directional, on-chip interface with transmit/receive switch, LNA, and complementary PA outputs.This combination allows for a small footprint and low cost RF solution. 3.2 Transceiver Register Interface and Operation The transceiver is controlled by set of interface registers that are memory-mapped into the CPU address space. The transceiver is capable of independent operation to perform transmit, receive, or perform CCA/ED operations and combinations. Additional features of the transceiver include: • DMA function moves data directly between RAM and transceiver buffers during transmit and receive on a cycle-steal basis. This off loads the data transfer from the CPU and provides higher performance. • Interrupt capability dependent on RX packet data availability. An interrupt can be generated based on a programmed count of RX data bytes that have been received and moved to RAM. This allows CPU filtering of RX data before completion of the packet reception to accelerate response to the packet. • Four transceiver Event Timer comparators are available to supplement MCU peripheral timer resources for PHY and MAC timing requirements. 3.3 IEEE 802.15.4 Acceleration Hardware The 802.15.4 transceiver has several hardware features that reduce the software stack size, off load the function from the CPU, and improve performance • Fully supports 2003 & 2006 versions of the IEEE 802.15 Standard. • Supports slotted and unslotted modes • Supports beacon enabled and non-beacon enabled networks • DMA data transfer between RAM and radio • Separate AES-128 Security module • 16-bit random number generator • 802.15.4 Sequence support — RX (conditionally followed by TXAck) —TX — CCA (used for CCA and ED cycles) — Tx/Rx (Tx followed by unconditional Rx or RCACK) — Continuous CCA • 802.15.4 Receiver Frame filtering. |
Podobny numer części - MC13233C |
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Podobny opis - MC13233C |
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