Silicon Laboratories Si4700, Руководство по программированию

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AN332
Confidential Rev. 0.2 109
Command 0x11. POWER _ DOWN
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 does not respond. The device will only respond when a POWER_UP
command is written.
Note: In AMRX component 1.0, a reset is required when the system controller writes a command other than POWER_UP
when in powerdown mode.
Command arguments: None
Response bytes: None
Command
Response
Command 0x12. SET _ PROPERTY
Sets a property shown in Table 13, “AM/SW/LW Receiver Property Summary,” on page 104. 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. See Figure 18, “CTS and SET_PROPERTY Command Complete tCOMP Timing Model,” on page
187 and Table 43, “Command Timing Parameters for the AM Receiver,” on page 189.
Note: The use of GPO2 as an interrupt pin and/or the use of GPO3 as DCLK digital clock input will override this GPIO_CTL
function for GPO2 and/or GPO3 respectively.
Command Arguments: Five
Response bytes: None
Command
Bit D7 D6 D5 D4 D3 D2 D1 D0
CMD
0 0 0 1 0 0 0 1
Bit D7 D6 D5 D4 D3 D2 D1 D0
STATUS CTS ERR X X RSQINT X X STCINT
Bit D7 D6 D5 D4 D3 D2 D1 D0
CMD
0 0 0 1 0 0 1 0
ARG1
0 0 0 0 0 0 0 0
ARG2 PROP
H
[7:0]
ARG3
PROP
L
[7:0]
ARG4 PROPD
H
[7:0]
ARG5
PROPD
L
[7:0]