AT86RF231-ZFR Atmel, AT86RF231-ZFR Datasheet - Page 155

• Manufacturer Part Number: AT86RF231-ZFR
• Description: TXRX LOW POWER 2.4GHZ 32VQFN
• Manufacturer: Atmel

Specifications of AT86RF231-ZFR

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee, 6LoWPAN, RF4CE, SP100, WirelessHART™, ISM
• Applications: Industrial Monitoring and Control, Wireless Alarm and Security Systems
• Power - Output: -17dBm ~ 3dBm
• Sensitivity: -101dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.3mA
• Current - Transmitting: 14mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 2405 MHz to 2480 MHz
• Interface Type: SPI
• Noise Figure: 6 dB
• Output Power: 20 dB
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 12.3 mA
• Minimum Operating Temperature: - 40 C
• Modulation: OQPSK
• Protocol Supported: 802.15.4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: AT86RF231-ZFR; AT86RF231-ZFRTR

11.9
11.9.1
11.9.2
8111C–MCU Wireless–09/09
Configurable Start-Of-Frame Delimiter
Overview
Register Description
The SFD is a field indicating the end of the SHR and the start of the packet data. The length of
the SFD is 1 octet (2 symbols). This octet is used for byte synchronization only and is not
included in the Frame Buffer.
The value of the SFD could be changed if it is needed to operate non IEEE 802.15.4 compliant
networks. An IEEE 802.15.4 compliant network node does not synchronize to frames with a dif-
ferent SFD value.
Due to the way the SHR is formed, it is not recommended to set the low-order 4 bits to 0. The
LSB of the SFD is transmitted first, i.e. right after the last bit of the preamble sequence.
Register 0x0B (SFD_VALUE):
This register contains the one octet start-of-frame delimiter (SFD) to synchronize to a received
frame.
• Bit [7:0] - SFD_VALUE
For compliant IEEE 802.15.4 networks set SFD_VALUE = 0xA7, as specified by
is the default value of the register.
To establish non IEEE 802.15.4 compliant networks the SFD value can be changed to any other
value. If enabled an IRQ_2 (RX_START) is issued only if the received SFD matches the register
content of register SFD_VALUE and a valid PHR is received.
Bit
+0x0B
Read/Write
Reset Value
R/W
7
1
R/W
6
0
R/W
5
1
SFD_VALUE[7:0]
R/W
4
0
R/W
3
0
R/W
2
1
R/W
1
1
AT86RF231
R/W
0
1
[1]
SFD_VALUE
and [2]. This
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