U2739M-B Datasheet, PDF (45/69 Pages) ATMEL Corporation – DAB One-Chip Channel- and Source Decoder

U2739M-B
Command Parameters:
Parameter
Meaning
Description
De-
faults
PARV
CIR post processing parameters valid 0:
(PKS / AVG / CIRTH / NSTH / TMIN) 1:
Parameters not valid
Following parameters valid
COV
CIR post processing filter coefficients 0:
valid
1:
Coefficients not valid
following coefficients valid
PKS
Number of peaks required for ’CIR
2ⁿ: Required peaks
0
correct’ indication
ISPCnt
CIR post processing average
n: CIR output average over n+1 values
0
TMIN(7..0) CIR minimum dT output
n: Minimum dT output after CIR post
0
processing (* 488 ns)
CIRTH(7..0) CIR threshold
n.n: – Threshold value for CIR peak
3.0
detection (format: 4.4 bit)
– Will be multiplied by ?
(standard deviation)
NSTH(7..0) Noise threshold
n: – Noise threshold value
0
(8 bit unsigned)
– Will be multiplied by 32
B0(15..0)
IIR filter coefficients
Coefficients for 1^st order IIR filter used for
0.5
CIR post processing (Q15 format required)
0.5
0
Rev. A1, 22-May-01
45 (69)