peb20954 Infineon Technologies Corporation, peb20954 Datasheet - Page 91

• Manufacturer Part Number: peb20954
• Description: Smart Integrated Digital Echo Canceller Sidec
• Manufacturer: Infineon Technologies Corporation

DTTIME[1:0]
ITUDT
CONFSCU4[7:0] (Addr.: 15H): Configuration of speech control unit 4, write protected,
Reset value = A7H
Overcompensation:
OCINC[1:0]
OCDEC[1:0]
SIADD[1:0]
OCAMRES
OCHRES
CONFSCU5[7:0] (Addr.: 16H): Configuration of speech control unit 5, write protected,
Reset value = 84H
Non Linear Processor (NLP) activation
NLPRANGE[4:0] Operating range for the NLP
Preliminary Data Sheet
RANGE
INC[1]
NLP
OC
[4]
RANGE
INC[0]
NLP
OC
[3]
"00": 32 ms
’0’: double talk detection operates up to 0 dB transhybrid loss
’1’: double talk detection according ITU: transhybrid loss greater or
"00": 32 ms
"00": 16 ms
Safety distance for SO > SI + SIADD comparison
"00": +0 dB
’0’:no reset via overcompensation detection
’1’: reset via overcompensation detection (H-Register reset only)
"00000":
"00001":
"00010"
"00011":
"00100":
...
"10000":
...
"11000":
Double talk hangover time
Increment period for overcompensation evaluation
Decrement period for overcompensation evaluation
’0’: no reset of attenuation meters in case of overcompensation
’1’: reset of attenuation meters only in case of overcompensation
equal 6 dB
RANGE
DEC[1]
NLP
OC
[2]
"01": 64 ms
"01": 16 ms
"01": 8 ms
"01": +3 dB
minus infinite: no residual echo limitation
-66 dBm0
-63 dBm0
-60 dBm0
-57 dBm0
-21 dBm0
+3 dBm0
RANGE
DEC[1]
NLP
OC
[1]
91
RANGE
ADD[1]
NLP
"10": 128 ms "11": 256 ms
[0]
"10": 8 ms
"10": 4 ms
"10": +6 dB
SI
SWMIN
ADD[0]
ATT[2]
SI
"11": 4 ms
"11": 2 ms
"11": +9 dB
Register Description
AMRES
SWMIN
ATT[1]
OC
PEB 20954
PEF 20954
SWMIN
ATT[0]
HRES
OC
04.99