TDA5230 Datasheet, PDF (88/186 Pages) Infineon Technologies AG – Universal Low Power ASK/FSK Single Conversion Multi-Channel Image-Reject Receiver

TDA523x
Functional Description
Dual: ASIGDETLO and BSIGDETLO: Signal Detector Threshold Low Level
ADDR: 0xB6 and 0xB7
Reset Value: 0x00
Bit R/W Description (For detailed procedure refer to Application note.)
7 W SDLORE: Source selection of ASK Noise Power status register
0: ASK Noise for SIGDET0/1
1: Signal for SIGDETLO
If enabled, the SIGDETLO level can be read out with ASKNP status register
6 W SDSEL: Manual selection of SIGDET range
0: Disable (default) - SIGDET0/1 range selection factor automatically done;
depending on datarate
1: Enable - Use SIGDETSEL control to set the valid range
5:0 W SDLOTHR: Signal Detector Threshold Low Level. This threshold level is
only valid, if the FSK Noise detector selection in the NDCONFIG register is
set to “11b”
Dual: ASIGDETSEL and BSIGDETSEL: Signal Detector Factor selection
ADDR: 0xB8 and 0xB9
Reset Value: 0x0A
Bit R/W Description
3:2 W SDSELLO: SIGDETLO range selection factor
00b: 2
01b: 4
10b: 6 (default value)
11b: 8
The selected signal detector value is divided by the 2^range selection factor.
Use the correct setting to fit the measured ASKNP value.
1:0 W SDSEL: SIGDET0/1 range selection factor
00b: 4
01b: 6
10b: 8 (default value)
11b: 10
The selected signal detector value is divided by the 2^range selection factor.
Use the correct setting to fit the measured ASKNP value.
Data Sheet
84
Version 4.0, 2007-06-01