Silicon Laboratories Si4704 Series Programming Manual page 8

AN332
Table 5. FM Transmitter Property Summary (Continued)
Prop
0x2204 TX_ACOMP_GAIN
0x2205 TX_LIMITER_RELEASE_TIME
0x2300 TX_ASQ_INTERRUPT_SOURCE
0x2301 TX_ASQ_LEVEL_LOW
0x2302 TX_ASQ_DURATION_LOW
0x2303 TX_ASQ_LEVEL_HIGH
0x2304 TX_ASQ_DURATION_HIGH
0x2C00 TX_RDS_INTERRUPT_SOURCE
0x2C01 TX_RDS_PI
0x2C02 TX_RDS_PS_MIX
0x2C03 TX_RDS_PS_MISC
0x2C04 TX_RDS_PS_REPEAT_COUNT
0x2C05 TX_RDS_PS_MESSAGE_COUNT
0x2C06 TX_RDS_PS_AF
0x2C07 TX_RDS_FIFO_SIZE
Notes:
1. Digital Audio Input feature (property DIGITAL_INPUT_FORMAT and DIGITAL_INPUT_SAMPLE_RATE) is
supported in FMTX component 2.0 or higher.
2. RDS feature (command TX_RDS_BUFF, TX_RDS_PS and RDS properties 0x2103, 0x2C00 through
2C07) is supported in FMTX component 2.0 or higher.
3. Limiter feature (LIMITEN bit in TX_ACOMP_ENABLE and property TX_LIMITER_RELEASE_TIME) is
supported in FMTX component 2.0 or higher.
8
Name
Sets the gain for audio dynamic range control.
Default is 15 dB.
3
Sets the limiter release time. Default is 102 (5.01 ms)
Configures measurements related to signal quality
metrics. Default is none selected.
Configures low audio input level detection threshold.
This threshold can be used to detect silence on the
incoming audio.
Configures the duration which the input audio level
must be below the low threshold in order to detect a
low audio condition.
Configures high audio input level detection threshold.
This threshold can be used to detect activity on the
incoming audio.
Configures the duration which the input audio level
must be above the high threshold in order to detect a
high audio condition.
Si4711/13/21 Only. Configure RDS interrupt sources.
2
Default is none selected.
Si4711/13/21 Only. Sets transmit RDS program identi-
2
fier.
Si4711/13/21 Only. Configures mix of RDS PS Group
2
with RDS Group Buffer.
Si4711/13/21 Only. Miscellaneous bits to transmit
2
along with RDS_PS Groups.
Si4711/13/21 Only. Number of times to repeat trans-
2
mission of a PS message before transmitting the next
PS message.
2
Si4711/13/21 Only. Number of PS messages in use.
Si4711/13/21 Only. RDS Program Service Alternate
Frequency. This provides the ability to inform the
2
receiver of a single alternate frequency using AF
Method A coding and is transmitted along with the
RDS_PS Groups.
Si4711/13/21 Only. Number of blocks reserved for the
2
FIFO. Note that the value written must be one larger
than the desired FIFO size.
Confidential Rev. 0.2
Description Default
0x000F
0x0066
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x40A7
0x0003
0x1008
0x0003
0x0001
0xE0E0
0x0000