Silicon Laboratories Si4700, Руководство по программированию

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AN332
60 Confidential Rev. 0.2
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 FMRX 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 9, “FM/RDS Receiver Property Summary,” on page 52. 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 42, “Command Timing Parameters for the FM Receiver,” on page 188.
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 RDSINT 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]