AN332 Datasheet, PDF (31/302 Pages) Silicon Laboratories – Si47XX PROGRAMMING GUIDE

5.1.2. FM/RDS Transmitter Properties
AN332
Property 0x0001. GPO_IEN
Configures the sources for the GPO2/INT interrupt pin. Valid sources are the lower 8 bits of the STATUS byte,
including CTS, ERR, RDSINT, ASQINT, and STCINT bits. The corresponding bit is set before the interrupt occurs.
The CTS bit (and optional interrupt) is set when it is safe to send the next command. The CTS interrupt enable
(CTSIEN) can be set with this property and the POWER_UP command. The state of the CTSIEN bit set during the
POWER_UP command can be read by reading the this property and modified by writing this property. This
property may only be set or read when in powerup mode. The default is no interrupts enabled.
Available in: All
Default: 0x0000
Bit D15 D14 D13 D12 D11 D10 D9
D8
D7 D6 D5 D4 D3 D2 D1 D0
Name 0
0
0
0
0 RDSREP ASQREP STCREP CTSIEN ERRIEN 0 0 0 RDSIEN ASQIEN STCIEN
Bit
15:11
10
9
8
7
6
5:3
2
1
0
Name
Reserved
RDSREP
ASQREP
STCREP
CTSIEN
ERRIEN
Reserved
RDSIEN
ASQIEN
STCIEN
Function
Always write to 0.
RDS Interrupt Repeat. (Si4711/13/21 Only)
0 = No interrupt generated when RDSINT is already set (default).
1 = Interrupt generated even if RDSINT is already set.
ASQ Interrupt Repeat.
0 = No interrupt generated when ASQREP is already set (default).
1 = Interrupt generated even if ASQREP is already set.
STC Interrupt Repeat.
0 = No interrupt generated when STCREP is already set (default).
1 = Interrupt generated even if STCREP is already set.
CTS Interrupt Enable.
0 = No interrupt generated when CTS is set (default).
1 = Interrupt generated when CTS is set.
After PowerUp, this bit will reflect the CTSIEN bit in ARG1 of PowerUp Command.
ERR Interrupt Enable.
0 = No interrupt generated when ERR is set (default).
1 = Interrupt generated when ERR is set.
Always write to 0.
RDS Interrupt Enable (Si4711/13/21 Only).
0 = No interrupt generated when RDSINT is set (default).
1 = Interrupt generated when RDSINT is set.
Audio Signal Quality Interrupt Enable.
0 = No interrupt generated when ASQINT is set (default).
1 = Interrupt generated when ASQINT is set.
Seek/Tune Complete Interrupt Enable.
0 = No interrupt generated when STCINT is set (default).
1 = Interrupt generated when STCINT is set.
Rev. 1.0
31