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CC1111EMK868-915 参数 Datasheet PDF下载

CC1111EMK868-915图片预览
型号: CC1111EMK868-915
PDF下载: 下载PDF文件 查看货源
内容描述: 低功耗低于1 GHz的射频系统级芯片(SoC )与MCU,存储器,收发器和USB控制器 [Low-power sub-1 GHz RF System-on-Chip (SoC) with MCU, memory, transceiver, and USB controller]
分类和应用: 存储射频控制器
文件页数/大小: 240 页 / 2823 K
品牌: TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
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CC1110Fx / CC1111Fx  
RFIM (0x91) – RF Interrupt Mask  
Bit  
Name  
Reset  
R/W  
Description  
7
IM_TXUNF  
0
R/W  
TX underflow  
0
1
Interrupt disabled  
Interrupt enabled  
6
5
4
3
2
1
0
IM_RXOVF  
IM_TIMEOUT  
IM_DONE  
IM_CS  
0
0
0
0
0
0
0
R/W  
R/W  
R/W  
R/W  
R/W  
R/W  
R/W  
RX overflow  
0
1
Interrupt disabled  
Interrupt enabled  
RX timeout, no packet has been received in the programmed period.  
0
1
Interrupt disabled  
Interrupt enabled  
Packet received/transmitted. Also used to detect underflow/overflow conditions  
0
1
Interrupt disabled  
Interrupt enabled  
Carrier sense  
0
1
Interrupt disabled  
Interrupt enabled  
IM_PQT  
Preamble quality threshold reached.  
0
1
Interrupt disabled  
Interrupt enabled  
IM_CCA  
Clear Channel Assessment  
0
1
Interrupt disabled  
Interrupt enabled  
IM_SFD  
Start of Frame Delimiter, sync word detected  
0
1
Interrupt disabled  
Interrupt enabled  
14.4 TX/RX Data Transfer  
Data to transmit is written to the RF Data  
register, RFD. Received data is read from the  
same register. The RFDregister can be viewed  
as a 1 byte FIFO. That means that if a byte is  
received in the RFDregister, and it is not read  
before the next byte is received, the radio will  
enter RX_OVERFLOW state and the  
RFIF.IRQ_RXOVF flag will be set together  
with RFIF.IRQ_DONE. In TX, the radio will  
DMA to transfer data between the FIFOs and  
the RF Data register, RFD. The DMA channel  
used to transfer received data to memory  
when the radio is in RX mode would have RFD  
as the source (SRCADDR[15:0]), the RX  
FIFO  
in  
memory  
as  
destination  
(DRSTADDR[15:0]), and RADIO as DMA  
trigger (TRIG[4:0]). For description on the  
usage of DMA, refer to section 13.5 on page  
102.  
enter  
TX_UNDERFLOW  
state  
(RFIF.IRQ_TXUVF and RFIF.IRQ_DONE will  
be asserted) if too few bytes are written to the  
RFD register compared to what the radio  
expect. To exit RX_OVERFLOW and/or  
TX_UNDERFLOW state, an SIDLE strobe  
command should be issued.  
A simple example of transmitting data is shown  
in Figure 48. This example does not use DMA.  
Note: The RFD register content will not be  
retianed in PM2 and PM3  
RX and TX FIFOs can be implemented in  
memory and it is recommended to use the  
SWRS033E  
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