AT86RF231-ZFR Atmel, AT86RF231-ZFR Datasheet - Page 73

• 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

8111C–MCU Wireless–09/09
Bit
+0x2C
Read/Write
Reset Value
R/W
7
0
MAX_FRAME_RETRIES
R/W
Register 0x2C (XAH_CTRL_0):
Register 0x2C (XAH_CTRL_0) is a control register for Extended Operating Mode.
• Bit [7:4] - MAX_FRAME_RETRIES
The setting of MAX_FRAME_RETRIES in TX_ARET mode specifies the number of attempts to
retransmit a frame, when it was not acknowledged by the recipient, before the transaction gets
cancelled.
• Bit [3:1] - MAX_CSMA_RETRIES
MAX_CSMA_RETRIES specifies the number of retries in TX_ARET mode to repeat the CSMA-
CA procedure before the transaction gets cancelled. According IEEE 802.15.4 the valid range of
MAX_CSMA_RETRIES is [0, 1, …, 5].
A value of MAX_CSMA_RETRIES = 7 initiates an immediate frame transmission without per-
forming CSMA-CA. This may especially be required for slotted acknowledgement operation.
MAX_CSMA_RETRIES = 6 is reserved.
• Bit 0 - SLOTTED_OPERATION
Using RX_AACK mode in networks operating in beacon or slotted mode, refer to IEEE 802.15.4
2006, section 5.5.1, register bit SLOTTED_OPERATION indicates that acknowledgement
frames are to be sent on back-off slot boundaries (slotted acknowledgement).
If this register bit is set the acknowledgement frame transmission has to be initiated by the
microcontroller using the rising edge of pin 11 (SLP_TR). This waiting state is signaled in sub
register TRAC_STATUS (register 0x02, TRX_STATE) with value SUCCESS_WAIT_FOR_ACK.
Table 7-18.
Register 0x2D (CSMA_SEED_0):
6
0
Bit
+0x2D
Read/Write
Reset Value
Register Bit
SLOTTED_OPERATION
R/W
5
1
Register Bit Slotted Acknowledgement Operation
R/W
7
1
R/W
4
R/W
1
6
1
Value
0
1
R/W
5
1
R/W
3
1
State Description
The radio transceiver operates in unslotted mode. An
acknowledgment frame is automatically sent if requested.
Refer to
acknowledgement frame has to be controlled by the
microcontroller.
MAX_CSMA_RETRIES
CSMA_SEED_0[7:0]
R/W
4
0
Section
R/W
2
0
R/W
7.2.3.6. The transmission of an
3
1
R/W
1
0
R/W
2
0
SLOTTED_OPERATION
R/W
1
1
R/W
0
0
AT86RF231
R/W
0
0
CSMA_SEED_0
XAH_CTRL_0
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