A N 5 4 3
26
Rev. 0.9
Command 0x11 POWER_DOWN
The POWER_DOWN command moves the device from powerup to powerdown mode. The CTS bit (and optional
interrupt) is set when it is safe to send the next command. This command may only be sent when in powerup
mode. Note that only the POWER_UP command is accepted in powerdown mode. If the system controller writes a
command other than POWER_UP when in powerdown mode, the device will not respond. The device will only
respond when a POWER_UP command is written. It is possible to power down a device and leave the oscillator
running.
Command
Response
Bit
7
6
5
4
3
2
1
0
CMD
0x11
ARG1
0000000
XOSC
ARG
Bit
Name
Function
1
7:1
Reserved
Always write 0000000.
1
0
XOSC
0 = Full powerdown.
1 = Powerdown and leave oscillator running.
Bit
7
6
5
4
3
2
1
0
STATUS
CTS
ERR
XX
RSQINT
RDSINT
ACFINT
STCINT
Note:
The above response shows status bits for FM Receive mode (see Table 8). See Table 9 for status bits for AM Receive
mode.
