参数资料
型号: AT86RF232-ZX
厂商: Atmel
文件页数: 55/175页
文件大小: 0K
描述: 2.4 GHZ ZIGBEE TRANSCEIVER
产品培训模块: AT86RF232 Low Power 2.4 GHz Wireless Transceiver
标准包装: 2,450
频率: 2.4GHz
数据传输率 - 最大: 250kbps
调制或协议: 802.15.4 Zigbee,6LoWPAN,ISM
应用: 通用
功率 - 输出: 3dBm
灵敏度: -100dBm
电源电压: 1.8 V ~ 3.6 V
电流 - 接收: 11.8mA
电流 - 传输: 13.8mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
工作温度: 0°C ~ 70°C
封装/外壳: 32-VFQFN 裸露焊盘
包装: 托盘
AT86RF232
Short Acknowledgment Frame (ACK) Start Timing
Register bit AACK_ACK_TIME (register 0x17, XAH_CTRL_1), see Table 7-11 , defines
the symbol time between frame reception and transmission of an acknowledgment
frame.
Table 7-11. Overview of RX_AACK Configuration Bits.
Register
Address
0x17
Register
Bit
2
Register Name
AACK_ACK_TIME
Description
0 : Standard compliant acknowledgement
timing of 12 symbol periods. In slotted
acknowledgement operation mode, the
acknowledgment frame transmission can
be triggered two symbol periods after
reception of the frame earliest.
1 : Reduced acknowledgment timing of two
symbol periods (32μs).
This feature can be used in all scenarios, independent of other configurations.
7.2.3.4 Frame Filtering
Frame Filtering is an evaluation whether or not a received frame is addressed to this
node. To accept a received frame and to generate an address match interrupt
IRQ_5 (AMI) a filtering procedure as described in IEEE 802.15.4-2006 Section 7.5.6.2.
(Third level of filtering) is applied to the frame. The Atmel AT86RF232 RX_AACK mode
accepts only frames that satisfy all of the following requirements (quote from
IEEE 802.15.4-2006, Section 7.5.6.2):
1. The Frame Type subfield shall not contain a reserved frame type.
2. The Frame Version subfield shall not contain a reserved value.
3. If a destination PAN identifier is included in the frame, it shall match macPANId or
shall be the broadcast PAN identifier (0xFFFF).
4. If a short destination address is included in the frame, it shall match either
macShortAddress or the broadcast address (0xFFFF). Otherwise, if an extended
destination address is included in the frame, it shall match aExtendedAddress.
5. If the frame type indicates that the frame is a beacon frame, the source PAN
identifier shall match macPANId unless macPANId is equal to 0xFFFF, in which
case the beacon frame shall be accepted regardless of the source PAN identifier.
6. If only source addressing fields are included in a data or MAC command frame, the
frame shall be accepted only if the device is the PAN coordinator and the source
PAN identifier matches macPANId.
The AT86RF232 requires satisfying two additional rules:
7. The frame type indicates that the frame is not an ACK frame (refer to Table 8-4 ).
8. At least one address field must be present.
Address match, indicated by interrupt IRQ_5 (AMI), is further controlled by the content
of subfields of the frame control field of a received frame according to the following rule:
If (Destination Addressing Mode = 0 OR 1) AND (Source Addressing Mode = 0) no
IRQ_5 (AMI) is generated, refer to Section 8.1.2.2 . This effectively causes all
55
8321A – MCU Wireless – 10/11
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