CMX625D5 CML Microcircuits, CMX625D5 Datasheet - Page 28

• Manufacturer Part Number: CMX625D5
• Description: ISDN TA POTS Interface
• Manufacturer: CML Microcircuits

ISDN TA POTS Interface
1.7.1.3 Operating Characteristics
For the following conditions unless otherwise specified:
Notes:
DC Parameters
I
Logic ‘1’ Input Level
Logic ‘0’ Input Level
Logic Input Leakage Current (Vin = 0 to V
Output Logic ‘1’ 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
DD
2000 Consumer Microcircuits Limited
Level at TONEFSK pin
Twist (Mark level w.r.t. Space level)
Tx 1200bits/sec (V23 mode)
Tx 1200bits/sec (Bell 202 mode)
Baud Rate (set by UART and DCL)
Mark (Logical 1) Frequency
Space (Logical 0) Frequency
Baud Rate (set by UART and DCL)
Mark (Logical 1) Frequency
Space (Logical 0) Frequency
All Enabled, V
All Disabled, V
DTMF Rx only, V
Tx (tones, SPM) only, V
Tx Output Buffer only Enabled, V
PCM Codec only, V
All Enabled, V
All Disabled, V
DTMF Rx only, V
Tx (tones, SPM) only, V
Tx Output Buffer only Enabled, V
PCM Codec only, V
V
0dBm = 775mVrms = 0dBm0.
Output Logic ‘0’ Level (I
DD
Single tone
Dual tone (per tone)
DTMF High Frequency Group
DTMF Low Frequency Group
1. At 25 C, not including any current drawn from the CMX625 pins by external circuitry.
2. At nominal signal frequencies and without skew.
3. Excluding IOM-2 serial bus interface pins: FSC, DCL, DD and DU in bus reversal.
4. At V
5. Frequency above 300Hz.
= 2.7V at Tamb = 25°C and V
DD
DD
DD
DD
DD
= 5.0V, load resistance greater than 40k , signal levels are proportional to V
= 5.0V
= 3.3V
= 5.0V
DD
= 3.3V
DD
OH
DD
DD
= 5.0V
= 3.3V
= 360µA)
= 5.0V
= 3.3V
DD
DD
OL
OUT
= 5.0V
= 3.3V
= 360µA)
= V
DD
DD
DD
)
DD
DD
= 5.0V
= 3.3V
),
= 3.0V to 5.5V at Tamb = -40 to +85°C,
28
Notes
Notes
Notes
1
1
1
1
1
1
1
1
1
1
1
1
3
3
3
4
4
4
4
4
5
V
1194
1297
2097
1194
1197
2197
Min.
70%
DD
Min.
Min.
-1.0
-1.0
-2.0
-1.0
-4.0
-4.0
-6.0
-2.5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-0.4
1200
1300
2100
1200
1200
2200
Typ.
Typ.
Typ.
10.0
300
198
-3.0
-3.0
-5.0
5.5
2.0
3.5
1.8
2.0
3.6
1.3
2.3
1.2
1.3
0.8
0
0
0
-
-
-
-
-
-
-
Max.
Max.
1206
1303
2103
1206
1203
2203
Max.
30%
+1.0
+2.0
-2.0
-2.0
-4.0
1.0
1.0
2.5
0.4
1.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CMX625
D/625/1
Baud
Baud
dBm
dBm
dBm
dBm
dBm
Unit
Unit
Unit
V
V
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
k
dB
Hz
Hz
Hz
Hz
Hz
DD
µA
µA
%
ìA
µA
V
V
DD
DD
.