CMX615P3 CMLMICRO [CML Microcircuits], CMX615P3 Datasheet - Page 22

• Manufacturer Part Number: CMX615P3
• Description: Digital Line to POTS Interface
• Manufacturer: CMLMICRO [CML Microcircuits]

Digital Line to POTS Interface
1.7.1.3 Operating Characteristics
For the following conditions unless otherwise specified:
Notes:
DC Parameters
Logic ‘1’ Input Level
Logic ‘0’ Input Level
Logic Input Leakage Current (Vin = 0 to V
Output Logic ‘1’ Level (I
Output Logic ‘0’ Level (I
IRQN O/P ‘Off State Current (V
FSK Encoder and Tx UART
TONEFSK Signal Level
Level at TONEFSK pin for:
Output Impedance
Tone frequency resolution
Tone output distortion
I
1999 Consumer Microcircuits Limited
DD
Level at TONEFSK pin
Twist (Mark level WRT Space level)
Tx 1200bits/sec (V23 mode)
Tx 1200bits/sec (Bell 202 mode)
Baud Rate (set by UART and Xtal frequency)
Mark (Logical 1) Frequency
Space (Logical 0) Frequency
Baud Rate (set by UART and Xtal frequency)
Mark (Logical 1) Frequency
Space (Logical 0) Frequency
(excluding XTAL/CLOCK input)
Zero-Power Mode
OpAmp only Enabled, V
OpAmp only Enabled, V
All Enabled, V
All Enabled, V
V
Xtal Frequency = 3.579545MHz
0dBm corresponds to 775mVrms.
DD
1. At 25 C, not including any current drawn from the CMX615 pins by external circuitry other
2. All logic inputs at V
3. Excluding XTAL/CLOCK pin.
4. At V
5. Frequency above 300Hz.
6. SPM has a soft rise and fall time of about 4.5ms. The level changes between V
Single tone
Dual tone (per tone)
DTMF High Frequency Group
DTMF Low Frequency Group
= 2.7V at Tamb = 25°C and V
than X1, C1 and C2.
in 2dB steps, 16 steps per rise and fall. When SPM is disabled, an extra 4.5ms falling tail end
of signal should be taken into consideration.
DD
DD
DD
= 5.0V
= 3.3V
= 5.0V, load resistance greater than 40k , signal levels are proportional to V
OH
OL
= 360µA)
= 360µA)
DD
DD
OUT
= 5.0V
= 3.3V
SS
= V
except for CSN input which is at V
DD
)
0.1%
DD
DD
),
= 3.0V to 5.5V at Tamb = -40 to +85°C,
22
Notes
Notes
Notes
1, 2
1
1
1
1
3
3
3
4
4
4
4
4
5
V
1194
1297
2097
1194
1197
2197
Min.
70%
Min.
-1.0
-2.0
-1.0
DD
Min.
-1.0
-4.0
-4.0
-6.0
-2.0
-
-
-
-
-
-
-0.4
-
-
-
-
DD
.
Typ.
10.0
-3.0
-3.0
-5.0
0.8
1200
1300
2100
1200
1200
2200
Typ.
<1.0
0.75
Typ.
0
-
1.5
5.0
3.0
0.0
0
-
-
-
-
-
-
Max.
-2.0
-2.0
-4.0
1.0
2.0
-
-
Max.
1206
1303
2103
1206
1203
2203
Max.
30%
+1.0
+2.0
1.0
7.5
4.5
0.4
1.0
-
-
-
-
-
BIAS
CMX615
dBm
dBm
dBm
dBm
and 0dBm
Unit
Baud
Baud
D/615/4
dBm
k
Unit
Unit
Hz
%
mA
mA
mA
mA
DD
V
V
dB
Hz
Hz
Hz
Hz
µA
µA
V
V
A
DD
DD
.