AT86RF212 Atmel Corporation, AT86RF212 Datasheet - Page 45

• Manufacturer Part Number: AT86RF212
• Manufacturer: Atmel Corporation

Specifications of AT86RF212

• Max. Operating Frequency: 0 MHz
• Crypto Engine: AES
• Operating Voltage (vcc): 1.8 to 3.6
• Frequency Band: 700/800/900MHz
• Max Data Rate (mb/s): 1
• Antenna Diversity: No
• External Pa Control: Yes
• Power Output (dbm): 10
• Receiver Sensitivity (dbm): -110
• Receive Current Consumption (ma): 9.0
• Transmit Current Consumption (ma): 18 at 5dBm
• Link Budget (dbm): 120

5.2.3 RX_AACK_ON – Receive with Automatic ACK
8168C-MCU Wireless-02/10
RX_AACK configuration steps:
• Setup Frame Filter:
• Configure acknowledgement generation
• Additional Frame Filtering Properties
The configuration of the Frame Filter is described in section 6.2.1. The addresses for
the address match algorithm are to be stored in the appropriate address registers.
Additional control of the RX_AACK mode is done with register 0x17 (XAH_CTRL_1)
and register 0x2E (CSMA_SEED_1).
Configuration examples for different device operating modes and handling of various
frame types can be found in section 5.2.3.1.
TX_ARET configuration steps:
• Enable automatic FCS handling if necessary
• Configure CSMA-CA
• Configure CCA (see section 6.6)
MAX_FRAME_RETRIES (register 0x2C, XAH_CTRL_0) defines the maximum number
of frame retransmissions.
The register bits MAX_CSMA_RETRIES (register 0x2C) configure the maximum
number of CSMA-CA retries after a busy channel is detected.
The CSMA_SEED_0 and CSMA_SEED_1 register bits (registers 0x2D and 0x2E)
define a random seed for the backoff time random-number generator in the
AT86RF212.
The register bits MAX_BE and MIN_BE (register 0x2F) define the maximum and
minimum CSMA backoff exponent, respectively.
The RX_AACK Extended Operating Mode handles reception and automatic
acknowledgement of IEEE 802.15.4 compliant frames.
The general flow of the RX_AACK algorithm is shown in Figure 5-9. Here the gray
shaded area is the standard flow of an RX_AACK transaction for IEEE 802.15.4
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Short address, PAN ID, and IEEE address
Handling of Frame Version Subfield
Handling of Pending Data
Automatic or slotted ACK generation
Frame Filter Version Control
Characterize the device as PAN coordinator if required
Promiscuous Mode
Handling of reserved frame types
MAX_FRAME_RETRIES
MAX_CSMA_RETRIES
CSMA_SEED
MAX_BE, MIN_BE
registers 0x20 – 0x2B
registers 0x2C, 0x2E
register 0x17
register 0x04
register 0x2C
register 0x2C
registers 0x2D, 0x2E
register 0x2F
AT86RF212
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