AT86RF212 Atmel Corporation, AT86RF212 Datasheet - Page 128

• 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

7.9 Automatic Filter Tuning (FTN)
7.9.1 Overview
7.9.2 Register Description
128
AT86RF212
Register 0x11 (BATMON):
The MSB of this register indicates the lock status of the PLL.
Table 7-42. Register 0x11 (BATMON)
• Bit 7 – PLL_LOCK_CP
This register bit can be used to read out the lock status of the PLL.
Table 7-43. PLL Lock Status
• Bit 6 – Reserved
• Bit 5:0
Refer to section 7.6.5.
The FTN is incorporated to compensate for temperature, supply voltage variations, and
part-to-part variations of the radio transceiver. A calibration cycle is initiated
automatically when entering the TRX_OFF state from the SLEEP, RESET, or P_ON
states.
Although receiver and transmitter are very robust against these variations, it is
recommended to initiate the FTN manually if the radio transceiver does not regularly
use the SLEEP state. This applies in particular for the High Data Rate Modes with
higher sensitivity against variations. The recommended calibration interval is about
5 minutes.
Register 0x18 (FTN_CTRL):
This register controls the operation of the filter tuning calibration loop.
Bit
Name
Read/Write
Reset Value
Bit
Name
Read/Write
Reset Value
Register Bit
PLL_LOCK_CP
7
PLL_LOCK_CP
R
0
3
BATMON_VTH[3]
R/W
0
Value
0
1
6
Reserved
R/W
0
2
BATMON_VTH[2]
R/W
0
Description
PLL is unlocked
PLL is locked
5
BATMON_OK
R
0
1
BATMON_VTH[1]
R/W
1
8168C-MCU Wireless-02/10
4
BATMON_HR
R/W
0
0
BATMON_VTH[0]
R/W
0