73K224BL
V.22bis, V.22, V.21, Bell 212A, 103
Single-Chip Modem w/ Integrated Hybrid
DATA SHEET
DYNAMIC CHARACTERISTICS AND TIMING (continued)
PARAMETER
Carrier Detect
Threshold
CONDITION
MIN
NOM
MAX
UNIT
Receive gain = On for lower input level measurements
All modes
-48
-43
dBm0
Hysteresis
All modes
2
Delay Time
FSK
70 dBm0 to -6 dBm0 Change at input
70 dBm0 to -40 dBm0 Change at input
-70 dBm0 to -6 dBm0 Change at input
-70 dBm0 to -40 dBm0 Change at input
-70 dBm0 to -6 dBm0 Change at input
-70 dBm0 to -40 dBm0 Change at input
-6 dBm0 to -70 dBm0 Change at input
40 dBm0 to -70 dBm0 Change at input
-6 dBm0 to -70 dBm0 Change at input
-40 dBm0 to -70 dBm0 Change at input
-6 dBm0 to -70 dBm0 Change at input
-40 dBm0 to -70 dBm0 Change at input
DPSK Mode
25
25
7
37
37
17
17
37
37
37
30
29
21
32
28
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
DPSK
QAM
FSK
7
25
25
25
15
20
14
25
18
Hold Time
DPSK
QAM
Answer Tone Detectors
Detect Level
-48
6
-43
50
50
dBm0
ms
Detect Time
Call init mode, 2100 or 2225 Hz
Call init mode, 2100 or 2225 Hz
DPSK Mode
Hold Time
6
ms
Pattern Detectors
S1 Pattern
Delay Time
For signals from -6 to -40 dBm0,
Demodulation mode
10
10
55
45
ms
ms
Hold Time
Unscrambled Mark
Delay Time
For signals from -6 to -40 call init
mode
10
10
45
45
ms
ms
Hold Time
Receive Level Indicator
Detect On
-22
1
-28
7
dBm0
ms
Valid after Carrier Detect
DPSK Mode
4
Page: 24 of 33
© 2005, 2008 TERIDIAN Semiconductor Corporation
Rev 7.1
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
