Call Progress and "Voice" Detector
CMX683
Electrical Performance (continued)
Figure 4 µC Parallel Interface Timings
For the following conditions unless otherwise specified:
Xtal Frequency = 3.579545MHz, VDD = 3.0V to 5.0V, Tamb = -40°C to +85°C, S/N = 20dB.
Notes
Min.
Typ.
Max.
40.0
20.0
Units
Signal Timings (ref. Figure 4)
tl
Burst Length Ignored
Burst Length Detected
ms
ms
ms
tL
80.0
40.0
tGI
Call Progress Tone Gap Length
Ignored
9
9
Call Progress Tone Gap Length
Detected
tGD
ms
tRP
Call Progress Tone Response Time
10
10
80.0
80.0
ms
ms
tDRP
Call Progress Tone De-Response
Time
Notes:
9.
10.
Only applies to bursts of the same frequency.
Measured with 350 + 440 Hz tone pair.
ã 2002 CML Microsystems Plc
11
D/683/1
CMLMICRO [ CML MICROCIRCUITS ]
