ax5051 AXSEM, ax5051 Datasheet - Page 29

• Manufacturer Part Number: ax5051
• Description: Ax5051 Radio
• Manufacturer: AXSEM

5.14. PWRMODE Register
The
Version 1.6
PWRMODE
register
PWRMODE
0000
0100
0101
1000
1001
1100
1101
POWERDOWN
VREGON
STANDBY
SYNTHRX
FULLRX
SYNTHTX
FULLTX
register controls, which parts of the chip are operating.
Name
Description
All digital and analog functions, except the register file, are
disabled. The core supply voltage is reduced to conserve leakage
power. SPI registers are still accessible, but at a slower speed.
All digital and analog functions, except the register file, are
disabled. The core voltage, however is at its nominal value for
operation, and all SPI registers are accessible at the maximum
speed.
The crystal oscillator is powered on; receiver and transmitter are
off.
The synthesizer is running on the receive frequency. Transmitter and
receiver are still off. This mode is used to let the synthesizer settle on
the correct frequency for receive.
Synthesizer and receiver are running.
The synthesizer is running on the transmit frequency. Transmitter
and receiver are still off. This mode is used to let the synthesizer
settle on the correct frequency for transmit.
Synthesizer and transmitter are running. Do not switch into this
mode before the synthesizer has completely settled on the transmit
frequency (in SYNTHTX mode), otherwise spurious spectral
transmissions will occur.
Circuit Description
Datasheet AX5051
Typical Idd
17 - 20 mA
11 - 40 mA
200 µA
650 µA
11 mA
10 mA
0.5 µA
29