AT86RF231 Atmel Corporation, AT86RF231 Datasheet - Page 150
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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11.6
11.6.1
Figure 11-12. Timing of RX_START and DIG2 for RX Frame Time Stamping
8111C–MCU Wireless–09/09
TRX_STATE
DIG2 (RX Frame Time Stamp)
IRQ
Interrupt latency
Number of Octets
Frame Content
RX Frame Time Stamping
Overview
To determine the exact timing of an incoming frame, e.g. for beaconing networks, the reception
of this frame can be signaled to the microcontroller via pin 10 (DIG2). The pin turns from L to H
after a detection of a valid PHR. When enabled, DIG2 is set to DIG2 = H at the same time as
IRQ_2 (RX_START), even if IRQ_2 is disabled. The pin remains high for the length of the frame
receive procedure, see
Note:
This function is enabled with register bit IRQ_2_EXT_EN (register 0x04) set. Pin 10 (DIG2)
could be connected to a timer capture unit of the microcontroller.
If this pin is not used for RX Frame Time Stamping it can be configured for Antenna Diversity.
Otherwise this pin is pulled-down to digital ground.
0
Timing figures refer to
RX_ON
Preamble
4
Figure 11-3 on page
128
12.4 “Digital Interface Timing Characteristics” on page
SFD
1
160
PHR
1
192
IRQ_2 (RX_START)
130.
t
IRQ
PSDU (250 kb/s)
m < 128
BUSY_RX
192 + m * 32
AT86RF231
157.
RX_ON
TRX_END
t
IRQ
Time [µs]
150
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