Calling Line Identifier with VMWI
CMX612
1.7.1.3 Operating Characteristics
Details in this section represent design target values and are not currently
guaranteed.
For the following conditions unless otherwise specified:
VDD = 2.7V at Tamb = -10 to +60°C and VDD = 3.0V to 5.5V at Tamb = -40°C to +85°C,
Xtal Frequency = 3.579545MHz ± 0.1%, 0dBV corresponds to 1.0Vrms.
Notes
Min.
Typ.
Max.
Units
DC Parameters
IDD (in ‘Zero-Power’ mode)
IDD (not in ‘Zero-Power’ mode) at VDD = 3.0V
IDD (not in ‘Zero-Power’ mode) at VDD = 5.0V
at VDD = 5.0V
1, 2
1
1
0.02
0.5
1.0
TBD
TBD
TBD
µA
mA
mA
Logic ‘1’ input level (RXCK and XTAL inputs)
Logic ‘0’ input level (RXCK and XTAL inputs)
70%
-1.0
VDD
VDD
µA
30%
+1.0
Logic input leakage current (Vin = 0 to VDD
excluding XTAL input
)
Output logic ‘1’ level (lOH = 360µA)
VDD
-
V
0.4V
Output logic ‘0’ level (lOL = 360µA)
IRQN o/p ‘off’ state current (Vout = VDD
0.4
1.0
V
µA
)
Schmitt Trigger input thresholds, see Fig 12
High going (Vthi)
0.56VDD
0.56VDD
+0.6V
V
V
Low going (Vtlo)
0.44VDD
-0.6V
0.44VDD
Tone Alert Detector
‘Low’ tone nominal frequency
‘High’ tone nominal frequency
Start of Tone Alert signal to DET high time
(Fig 6 Tton)
2130
2750
55.0
Hz
Hz
ms
End of Tone Alert signal to DET and IRQN low
time (Fig 6 Ttoff)
DET high time to ensure IRQN goes low
(Fig 6 TqCAS)
0.5
8.0
5.0
17.0
45.0
ms
ms
3
To ensure detection:
‘Low’ tone frequency tolerance
‘High’ tone frequency tolerance
±0.5
±0.5
%
%
Level (total)
2750Hz tone level wrt
2130Hz tone level
Signal to Noise ratio
Dual tone burst duration for DET output
Dual tone burst duration to ensure
IRQN goes low
4
5
-40.0
-2.2
dBV
-6.0
20.0
75.0
+6.0
dB
dB
ms
75.0
85.0
ms
6
4
To ensure non-detection:
‘Low’ tone frequency tolerance
‘High’ tone frequency tolerance
Level (total)
±75.0
±95.0
Hz
Hz
dBV
ms
-46.0
45.0
Dual tone burst duration
ã 2002 Consumer Microcircuits Limited
22
D/612/3
CMLMICRO [ CML MICROCIRCUITS ]
