peb20954 Infineon Technologies Corporation, peb20954 Datasheet - Page 89

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

HTIM[7:0] (Addr.: 3BH): High-Byte for Timer, Reset value = 00H
The timer can be used by the processor, if the processor wants to do different operations
inbetween. The timer is counting downward. The timing decrement is 1 ms. The
accuracy of the timer is +0 ... 1 ms. The maximum value is 65535 ms.
TIM[15:8]
LTIM[7:0] (Addr. 3CH): Low-Byte for Timer, Reset value = 00H
TIM[7:0]
CONFSCU1[7:0] (Addr.: 12H): Configuration of speech control unit 1,
write protected, Reset value = 69H
BNADD [3:0]
Attenuation Measurement
ADAPTFAST[1:0] Fast count period for attenuation meters for total echo attenuation
ADAPTSLOW[1:0] Slow count period for attenuation meters for total echo attenuation
Preliminary Data Sheet
TIM[15]
ADD[3]
TIM[7]
BN
TIM[14]
ADD[2]
TIM[6]
BN
load value for the Timer (high byte)
load value for the Timer (low byte)
Safety distance for SO > background noise + BNADD comparison
"0000": +0 dB
"0010": 3 dB
"0100": 6 dB
"0110": 9 dB
"1000": 12 dB
"1010": 15 dB
"1100": 18 dB
"1110": 22.5 dB
and transhybrid loss
"00": 2 ms
and transhybrid loss
"00": 64 ms
TIM[13]
ADD[1]
TIM[5]
BN
"01": 1 ms
"01": 32 ms
TIM[12]
ADD[0]
TIM[4]
BN
89
FAST[1]
TIM[11]
ADAPT
TIM[3]
"0001": 1.5 dB
"0011": 4.5 dB
"0101": 7.5 dB
"0111": 10.5 dB
"1001": 13.5 dB
"1011": 16.5 dB
"1101": 21 dB
"1111": 24 dB
"10": 500 s "11": 250 s
"10": 16 ms
FAST[0]
TIM[10]
ADAPT
TIM[2]
"11": 8 ms
Register Description
SLOW[1]
ADAPT
TIM[9]
TIM[1]
PEB 20954
PEF 20954
SLOW[0]
ADAPT
TIM[8]
TIM[0]
04.99