peb20954 Infineon Technologies Corporation, peb20954 Datasheet - Page 101

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

AVDDI[7:0] (Addr.: 73H): AFI Voice Detection, Detection Intervals, write protected,
Reset value = 77H
VDMAXINTERVAL[3:0]
VDINTERVAL[3:0]
Preliminary Data Sheet
VDMAX
INTER
VAL[3]
VDMAX
INTER
VAL[2]
delays > 64 ms, a tandem configuration of two SIDEC ASICs has to
be used in which a single SIDEC chip processes only every other four
channels:
Master:
Slave:
If the 128 ms mode is not selected (pins MODE0 and MODE1),
any DELAYs > 64 ms in register AEEPD are interpreted as 64 ms.
"0000": 8 ms
"0010": 24 ms
"0100": 40 ms
"0110": 56 ms
"1000": 72 ms
"1010": 88 ms
"1100": 104 ms
"1110": 120 ms
Time interval for detecting maximum value for "no-voice" detection:
VDMAXINTERVAL defines the time range over which the maximum
of the received values for "no-voice"-detection is determined.
"0000": 8 ms
"0010": 24 ms
"0100": 40 ms
"0110": 56 ms
"1000": 72 ms
"1010": 88 ms
"1100": 104 ms
"1110": 120 ms
Time interval for voice detection:
VDINTERVAL defines the time range over which received values
are checked for "no-voice"-detection. The coding is the same as for
AEEPD.DELAY.
"0000": 8 ms
"0010": 24 ms
VDMAX
INTER
VAL[1]
0,1,2,3,
4,5,6,7,
VDMAX
INTER
VAL[0]
"0011": 32 ms
"0101": 48 ms
"0111": 64 ms
"1001": 80 ms
"1011": 96 ms
"1101": 112 ms
8,9,10,11,
12,13,14,15, 20,21,22,23, 28,29,30,31
"0001": 16 ms
"1111": 128 ms
101
"0001": 16 ms
"0011": 32 ms
"0101": 48 ms
"0111": 64 ms
"1001": 80 ms
"1011": 96 ms
"1101": 112 ms
"1111": 128 ms
"0001": 16 ms
"0011": 32 ms
INTER
VAL[3]
VD
16,17,18,19, 24,25,26,27
INTER
VAL[2]
VD
Register Description
INTER
VAL[1]
VD
PEB 20954
PEF 20954
INTER
VAL[0]
VD
04.99