AT86RF212 Atmel Corporation, AT86RF212 Datasheet - Page 19

• 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

Figure 4-10. Exemplary SPI Sequence - Frame Buffer Write of a Frame with 4-byte PSDU
4.3.3 SRAM Access Mode
Figure 4-11. Packet Structure – SRAM Read Access
8168C-MCU Wireless-02/10
Access violations during a Frame Buffer read or write access are indicated by interrupt
IRQ_6 (TRX_UR). For further details, refer to section 7.4.
Notes
• The Frame Buffer is shared between RX and TX; therefore, the frame data are
• To avoid overwriting during receive, Dynamic Frame Buffer Protection can be
• For exceptions, e.g. receiving acknowledgement frames in Extended Operating Mode
The SRAM access mode allows accessing dedicated bytes within the Frame Buffer.
This may reduce the SPI traffic.
During frame receive, after occurrence of IRQ_2 (RX_START), a SRAM access can be
used to upload the PHR field while preserving Dynamic Frame Buffer Protection, see
section 9.7.
Each SRAM access starts with /SEL = L. The first transferred byte on MOSI shall be the
command byte and must indicate an SRAM access mode according to the definition in
Table 4-2. The following byte indicates the start address of the write or read access.
The address space is 0x00 to 0x7F for radio transceiver receive or transmit operations.
The security module (AES) uses an address space from 0x82 to 0x94; refer to
section 9.1.
On SRAM read access, one or more bytes of read data are transferred on MISO
starting with the third byte of the access sequence; refer to Figure 4-11.
On SRAM write access, one or more bytes of write data are transferred on MOSI
starting with the third byte of the access sequence; refer to Figure 4-12. Do not attempt
to read or write bytes beyond the SRAM buffer size.
overwritten by new incoming frames. If the TX frame data are to be retransmitted, it
must be ensured that no frame was received in the meanwhile.
enabled; refer to section 9.7.
(TX_ARET), refer to section 5.2.4.
AT86RF212
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