CC2520数据表
2.4 GHZ IEEE 802.15.4 /的ZigBee射频收发器
SWRS068 - 2007年12月
12.3
电源与SRES .............................................. .................................................. .... 41
13指令集............................................................................................................................ 43
13.1
定义...................................................................................................................... 43
13.2
指令说明................................................ .................................................. 43
13.3
指令集摘要............................................... ................................................. 51
13.4
状态字节..................................................................................................................... 53
13.5
命令选通......................................................................................................... 53
13.6
命令选通缓冲器............................................... ................................................. 53
14例外................................................................................................................................. 55
14.1
例外的GPIO引脚.............................................. ................................................. 56
14.2
预定义的异常通道............................................... ...................................... 56
14.3
异常绑定到指令（命令选通脉冲） .......................................... ....... 57
15内存映射.............................................................................................................................. 59
15.1
FREG ............................................................................................................................. 60
15.2
SREG ............................................................................................................................. 60
15.3
TX FIFO ......................................................................................................................... 60
15.4
RX FIFO ......................................................................................................................... 60
15.5
MEM ............................................................................................................................... 60
15.6
帧过滤和源匹配存储器映射........................................... ........... 60
16频率和信道编程............................................. ......................................... 62
17 IEEE 802.15.4-2006调制格式......................................... ........................................... 63
18 IEEE 802.15.4-2006帧格式......................................... .................................................. 65
18.1
PHY层...................................................................................................................... 65
18.2
MAC层..................................................................................................................... 65
19传输模式........................................................................................................................... 67
19.1
TX控制...................................................................................................................... 67
19.2
德克萨斯州时间............................................................................................................. 67
19.3
TX FIFO访问............................................................................................................. 67
19.3.1
Retransmission........................................................................................................... 68
19.3.2
错误条件......................................................................................................... 68
19.4
TX流程图........................................................................................................... 69
19.5
帧处理.......................................................................................................... 70
19.5.1
同步头................................................ ............................................. 70
19.5.2
帧长度字段............................................... .................................................. ... 70
19.5.3
帧校验Sequence............................................................................................. 70
19.6
Exceptions...................................................................................................................... 71
19.7
清晰频道Assessment............................................................................................ 71
19.8
输出功率Programming........................................................................................... 71
19.9
提示和技巧.............................................................................................................. 72
20接收模式............................................................................................................................ 73
20.1
RX Control...................................................................................................................... 73
20.2
RX状态时序............................................................................................................. 73
20.3
帧处理.......................................................................................................... 73
20.3.1
同步头和帧的长度字段............................................ ........ 74
20.3.2
帧过滤........................................................................................................... 74
20.3.3
源地址匹配............................................... ........................................... 77
20.3.4
帧校验Sequence............................................................................................. 80
20.3.5
确认传输................................................ ................................ 81
20.4
RX FIFO访问............................................................................................................ 82
20.4.1
使用FIFO和FIFOP信号............................................ ................................ 82
20.4.2
错误条件......................................................................................................... 83
20.5
RSSI ............................................................................................................................... 83
20.6
链路质量指示............................................... .................................................. ... 84
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