AT86RF212 Atmel Corporation, AT86RF212 Datasheet - Page 37

• 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

5.1.4.4 State Change from PLL_ON via BUSY_TX to RX_ON States
8168C-MCU Wireless-02/10
Figure 5-5. Transition from TRX_OFF to PLL_ON/RX_ON State and further to
RX_ON/PLL_ON
In TRX_OFF state, entering the commands PLL_ON or RX_ON initiates a ramp-up
sequence of the internal 1.8 V voltage regulator for the analog domain (AVREG).
RX_ON state can be entered any time from PLL_ON state, regardless whether the PLL
has already locked, which is indicated by IRQ_0 (PLL_LOCK). Likewise, PLL_ON state
can be entered any time from RX_ON state.
When TRX_OFF_AVDD_EN (register 0x0C, TRX_CTRL_2) is already set in TRX_OFF
state, the analog voltage regulator is turned on immediately and the ramp up sequence
to PLL_ON or RX_ON can be accelerated.
The transition from PLL_ON to BUSY_TX state and subsequently to RX_ON state is
shown in Figure 5-6.
Figure 5-6. PLL_ON to BUSY_TX to RX_ON Timing for O-QPSK 250 kbit/s Mode
Starting from PLL_ON, it is further assumed that the PLL has already been locked. A
transmission is initiated either by a rising edge of pin 11 (SLP_TR) or by command
TX_START. The PLL settles to the transmit frequency and the PA is enabled. After the
duration of t
transmitting the internally generated SHR and the PSDU data of the Frame Buffer. After
completing the frame transmission, indicated by IRQ_3 (TRX_END), the PLL settles
back to the receive frequency within t
If during BUSY_TX the radio transmitter is requested to change to a receive state, it
automatically proceeds to state RX_ON upon completion of the transmission.
Note:
If TRX_CMD = RX_ON in TRX_OFF state, RX_ON state is entered immediately,
even if the PLL has not settled.
TR10
(1 symbol period), the AT86RF212 changes into BUSY_TX state,
TR11
and returns to state PLL_ON.
AT86RF212
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