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CC1110-RTY1 数据表(PDF) 158 Page - Texas Instruments |
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CC1110-RTY1 数据表(HTML) 158 Page - Texas Instruments |
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158 / 203 page  CC1110 CC1110 PRELIMINARY Datasheet (Rev. 1.01) SWRS033A Page 158 of 202 RFIM (0x91) – RF Interrupt Mask Bit Name Reset R/W Description 7:6 - 00 R0 Not used RX timeout, no packet has been received in the programmed period. 0 Interrupt disabled 5 IM_TIMEOUT 0 R/W 1 Interrupt enabled Packet received/transmitted. Also used to detect underflow/overflow conditions. 0 Interrupt disabled 4 IM_DONE 0 R/W 1 Interrupt enabled Carrier sense. 0 Interrupt disabled 3 IM_CS 0 R/W 1 Interrupt enabled Preamble quality reached. 0 Interrupt disabled 2 IM_PQT 0 R/W 1 Interrupt enabled Clear Channel Assessment 0 Interrupt disabled 1 IM_CCA 0 R/W 1 Interrupt enabled Start of Frame Delimiter, sync word detected 0 Interrupt disabled 0 IM_SFD 0 R/W 1 Interrupt enabled 15.4 TX/RX Data Transfer Transmit data is written to the radio when writing to the RF Data register, RFD. Received data is returned when the RFD register is read. It is required that the user software uses FIFO structures in memory to implement RX and TX FIFOs. In most cases it is recommended that the transfer of data between FIFOs in memory and the RF Data register, RFD, involves the use of DMA channels with RFD as source/destination and DMA trigger RADIO. For description on the usage of DMA, refer to section 13.2 on page 78. A simple example of writing TX data to the radio is shown in Figure 35. This example does not use DMA, but illustrates some of the basic principles. |
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