Silicon Laboratories Si4704 Series Programming Manual page 14

AN332
Command 0x12. SET_PROPERTY
Sets a property shown in Table 5, "FM Transmitter Property Summary," on page 7. 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 41, "Command Timing Parameters for the FM Transmitter," on page 188.
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.
Command Arguments: Five
Response bytes: None
Command
Bit
CMD
ARG1
ARG2
ARG3
ARG4
ARG5
ARG Bit Name
1 7:0 Reserved
2 7:0 PROP
3 7:0 PROP
4 7:0 PROPD
5 7:0 PROPD
Response
Bit D7
STATUS CTS
14
D7 D6 D5
0 0 0
0 0 0
Always write to 0.
Property High Byte.
[7:0]
This byte in combination with PROP
H
modify. See Section "5.1.2. FM/RDS Transmitter Properties" on page 29.
Property Low Byte.
[7:0]
This byte in combination with PROP
L
modify. See Section "5.1.2. FM/RDS Transmitter Properties" on page 29.
Property Value High Byte.
[7:0]
This byte in combination with PROPV
H
See Section "5.1.2. FM/RDS Transmitter Properties" on page 29.
Property Value Low Byte.
[7:0] This byte in combination with PROPV
L
See Section "5.1.2. FM/RDS Transmitter Properties" on page 29.
D6 D5
ERR X
Confidential Rev. 0.2
D4 D3
1 0
0 0
PROP [7:0]
H
PROP [7:0]
L
PROPD [7:0]
H
PROPD [7:0]
L
Function
is used to specify the property to
L
is used to specify the property to
H
is used to set the property value.
L
is used to set the property value.
H
D4 D3
X X RDSINT
D2 D1
0 1
0 0
D2 D1
ASQINT STCINT
D0
0
0
D0