ax50424 AXSEM, ax50424 Datasheet - Page 25

• Manufacturer Part Number: ax50424
• Description: Advanced Multi-channel Single Chip Uhf Receiver
• Manufacturer: AXSEM

5.13. PWRMODE Register
The
A typical
Version 1.3
Step
PWRMODE
1
2
3
4
5
register
PWRMODE
0000
0100
0101
1000
1001
PWRMODE[3:0] Remarks
POWERDOWN
STANDBY
SYNTHRX
FULLRX
POWERDOWN
PWRMODE
POWERDOWN
VREGON
STANDBY
SYNTHRX
FULLRX
register controls, which parts of the chip are operating.
Name
sequence for a receive session :
The settling time is dominated by the crystal used, typical value 3 ms
The synthesizer settling time is 5 – 50 µs depending on settings, see section AC
Characteristics
Data reception
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; the receiver is off.
The synthesizer is running on the receive frequency. The receiver is
still off. This mode is used to let the synthesizer settle on the correct
frequency for receive.
Synthesizer and Receiver are running.
Description
Table of Contents
Datasheet AX50424
Typical Idd
17 - 20 mA
200 µA
650 µA
11 mA
0.5 µA
25