参数资料
型号: AT86RF212-ZU
厂商: Atmel
文件页数: 92/172页
文件大小: 0K
描述: IC TXRX ZIGBE/802.15.4/ISM 32QFN
产品培训模块: MCU Wireless Solutions Product Line Introduction
标准包装: 2,450
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: 托盘

7 Module Description
7.1 Physical Layer Modes
7.1.1 Spreading, Modulation, and Pulse Shaping
The AT86RF212 supports various physical layer (PHY) modes independent of the RF
channel selection. Symbol mapping along with chip spreading, modulation, and pulse
shaping is part of the digital base band processor, see Figure 7-1.
Figure 7-1. Base Band Transmitter Architecture
The combination of spreading, modulation, and pulse shaping are restricted to several
combinations as shown in Table 7-1.
The AT86RF212 is fully compliant to the IEEE 802.15.4 low data rate modes of 20
kbit/s or 40 kbit/s, employing binary phase-shift keying (BPSK) and spreading with a
fixed chip rate of 300 kchip/s or 600 kchip/s, respectively. The symbol rate is 20
ksymbol/s or 40 ksymbol/s, respectively. In both cases, pulse shaping is approximating
a raised cosine filter with roll-off factor 1.0 (RC-1.0).
For optional data rates according to IEEE 802.15.4-2006, offset quadrature phase-shift
keying (O-QPSK) is supported by the AT86RF212 with a fixed chip rate of either 400
kchip/s or 1000 kchip/s.
At a chip rate of 400 kchip/s, pulse shaping is always a combination of both, half-sine
shaping (SIN) and raised cosine filtering with roll-off factor 0.2 (RC-0.2) according to
IEEE 802.15.4-2006 for the 868.3 MHz band. At a chip rate of 1000 kchip/s, pulse
shaping is either half-sine filtering (SIN) as specified in IEEE 802.15.4-2006 [2], or,
alternatively, raised cosine filtering with roll-off factor 0.8 (RC-0.8) as specified in IEEE
802.15.4c-2009 [3].
For O-QPSK, the AT86RF212 supports spreading according to IEEE 802.15.4-2006
with data rates of either 100 kbit/s or 250 kbit/s depending on the chip rate, leading to a
symbol rate of either 25 ksymbol/s or 62.5 ksymbol/s, respectively.
Additionally, the AT86RF212 supports two more spreading codes for O-QPSK with
shortened code lengths. This leads to higher but non IEEE 802.15.4-2006 compliant
data rates during the PSDU part of the frame with 200, 400, 500, and 1000 kbit/s. The
proprietary High Data Rate Modes are outlined in more detail in section 7.1.4.
Table 7-1. Modulation and Pulse Shaping
Modulation
BPSK
O-QPSK
Chip Rate
[kchip/s]
300
600
400
1000
Supported Data
Rate for PPDU
Header [kbit/s]
20
40
100
250
Supported Data
Rates for PSDU
[kbit/s]
20
40
100, 200, 400
250, 500, 1000
Pulse Shaping
RC-1.0
RC-1.0
SIN and RC-0.2
SIN or RC-0.8
92
AT86RF212
8168C-MCU Wireless-02/10
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