AT86RF231 Atmel Corporation, AT86RF231 Datasheet - Page 155
AT86RF231
Manufacturer Part Number
AT86RF231
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT86RF231.pdf
(198 pages)
Specifications of AT86RF231
Max. Operating Frequency
0 MHz
Crypto Engine
AES
Operating Voltage (vcc)
1.8 to 3.6
Frequency Band
2.4 GHz
Max Data Rate (mb/s)
2
Antenna Diversity
Yes
External Pa Control
Yes
Power Output (dbm)
3
Receiver Sensitivity (dbm)
-101
Receive Current Consumption (ma)
13.2
Transmit Current Consumption (ma)
14.4
Link Budget (dbm)
104
Available stocks
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Part Number
Manufacturer
Quantity
Price
Part Number:
AT86RF231-ZU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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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
155
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