参数资料
型号: AT86RF212-ZUR
厂商: Atmel
文件页数: 86/172页
文件大小: 0K
描述: TXRX AVR LOW PWR/VOLTAGE 32PQFN
标准包装: 1
频率: 700MHz,800MHz,900MHz
数据传输率 - 最大: 250kbps
调制或协议: 802.15.4 Zigbee,6LoWPAN,ISM
应用: ISM,ZigBee?
功率 - 输出: 10dBm
灵敏度: -110dBm
电源电压: 1.8 V ~ 3.6 V
电流 - 接收: 9.2mA
电流 - 传输: 25mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
工作温度: -40°C ~ 85°C
封装/外壳: 32-VFQFN 裸露焊盘
包装: 标准包装
其它名称: AT86RF212-ZURDKR
Table 6-29. CCA Measurement Period and Access in BUSY_RX State
CCA Mode
1
2
Request within ED Measurement (1)
Energy above threshold
CCA result is available after finishing
automated ED measurement period.
Carrier sense only
Request after ED Measurement
CCA result is immediately available
after request.
CCA result is immediately available after request.
3
Carrier sense with energy above threshold (AND)
CCA result is available after finishing
automated ED measurement period.
CCA result is immediately available
after request.
0
Carrier sense with energy above threshold (OR)
CCA result is available after finishing
automated ED measurement period.
CCA result is immediately available
after request.
Note:
1. After detecting the SHR, an automated ED measurement is started with a length of
8 symbol periods (2 symbol periods for high rate PHY modes). This automated ED
measurement must be finished to provide a result for the CCA measurement. Only
one automated ED measurement per frame is performed.
It is recommended to perform CCA measurements in RX_ON state only. To avoid
switching accidentally to BUSY_RX state, the SHR detection can be disabled by setting
register bit RX_PDT_DIS (register 0x15, RX_SYN), refer to section 7.2.3. The receiver
remains in RX_ON state to perform a CCA measurement until the register bit
RX_PDT_DIS is set back to continue the frame reception. In this case, the CCA
measurement duration is 8 symbol periods.
6.6.6 Register Description
Register 0x01 (TRX_STATUS) :
Two register bits of register 0x01 (TRX_STATUS) indicate the status of the CCA
measurement.
Table 6-30. Register 0x01 (TRX_STATUS)
Bit
Name
Read/Write
Reset Value
Bit
Name
Read/Write
Reset Value
7
CCA_DONE
R
0
3
TRX_STATUS[3]
R
0
6
CCA_STATUS
R
0
2
TRX_STATUS[2]
R
0
5
Reserved
R
0
1
TRX_STATUS[1]
R
0
4
TRX_STATUS[4]
R
0
0
TRX_STATUS[0]
R
0
? Bit 7 – CCA_DONE
This register indicates completion a CCA measurement, which is additionally indicated
by the interrupt IRQ_4 (CCA_ED_DONE). Note that register bit CCA_DONE is cleared
in response to a CCA_REQUEST.
86
AT86RF212
8168C-MCU Wireless-02/10
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