Silicon Laboratories Si4704 Series Programming Manual page 13

AN332
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 FMTX component 1.0 and 2.0, 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
Bit D7 D6 D5 D4 D3 D2 D1 D0
CMD
0 0 0 1 0 0 0 1
Response
Bit D7 D6 D5 D4 D3 D2 D1 D0
STATUS CTS ERR X X X RDSINT ASQINT STCINT
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