CS61304A Cirrus Logic, Inc., CS61304A Datasheet - Page 3

• Manufacturer Part Number: CS61304A
• Description: T1-E1 Line Interface Unit for CPE-ISDN PRI
• Manufacturer: Cirrus Logic, Inc.

ANALOG SPECIFICATIONS
Notes: 10. Using a 0.47 F capacitor in series with the primary of a transformer recommended
DS156PP2
Transmitter
AMI Output Pulse Amplitudes
E1 Zero (space) level (LEN2/1/0 = 0/0/0)
Load Presented To Transmitter Output
Jitter Added by the Transmitter
Power in 2kHz band about 772kHz
Power in 2kHz band about 1.544MHz
(referenced to power in 2kHz band at 772kHz)
Positive to Negative Pulse Imbalance
E1 Transmitter Return Loss
E1 Transmitter Short Circuit Current
11. Pulse amplitude measured at the output of a 1:1 transformer across a 75
12. Pulse amplitude measured at the output of a 1:1.26 transformer across a 120
13. Pulse amplitude measured at the output of a 1:1.15 transformer across a 100
14. Pulse amplitude measured at the DSX-1 Cross-Connect across a 100
15. Input signal to RTIP/RRING is jitter free. Values will reduce slightly if jitter free clock is input to TCLK.
16. Not production tested. Parameters guaranteed by design and characterization.
17. Return loss = 20 log
18. Measured broadband through a 0.5
in the Applications Section.
line length setting LEN2/1/0 = 0/0/0.
setting LEN2/1/0 = 0/0/0 or at the output of a 1:1 transformer across a 120
line length setting LEN2/1/0 = 0/1/0.
settings from LEN2/1/0 = 0/1/1 to LEN2/1/0 = 1/1/1 using a 1:1.5 transformer.
z
and a 1:2 transformer with two 9.4
or for LEN2/1/0 = 0/0/1 with a 1:2 transformer and two 15
120
during the transmission of an all ones data pattern for LEN2/1/0 = 0/0/0 or 0/0/1with a 1:2 transformer
and the series resistors specified in Table A1.
0
= impedance of line load. Measured with a repeating 1010 data pattern with LEN2/1/0 = 0/0/0
E1, 75
E1, 120
T1, FCC Part 68
T1, DSX-1
1:1 transformer and 75
1:1.26 transformer and 120
10Hz - 8kHz
8kHz - 40kHz
10Hz - 40kHz
Broad Band
T1, DSX-1
E1 amplitude at center of pulse
E1 pulse width at 50% of nominal amplitude
51 kHz to 102 kHz
102 kHz to 2.048 MHz
2.048 MHz to 3.072 MHz
load.
Parameter
10
ABS((z
1
(TA = -40 C to 85 C; TV+, RV+ = 5.0V 5%; GND = 0V)
load
(Notes 10, 16, 17)
+z
0
load
(Notes 10, 16)
(Notes 10, 16)
(Notes 10, 16)
(Notes 10, 18)
)/(z
series resistors terminated by a 75
1
resistor across the secondary of the transmitter transformer
-z
(Note 10)
(Note 11)
(Note 12)
(Note 13)
(Note 14)
(Note 10)
(Note 15)
0
)) where z
1
-0.237
= impedance of the transmitter, and
2.14
12.6
Min
-0.3
2.7
2.7
2.4
-29
20
20
20
-5
-5
-
-
-
-
-
-
-
series resistors terminated by a
2.37
Typ
3.0
3.0
3.0
-38
0.2
75
15
28
28
24
-
-
-
-
-
-
-
-
-
load for all line length
load,
load for
load for LEN2/1/0=0/0/1.
load for
load for line length
0.237
0.025
0.025
CS61304A
17.9
Max
0.01
0.05
2.6
3.3
3.3
3.6
0.3
0.5
50
5
5
-
-
-
-
-
mA RMS
Units
dBm
dB
dB
dB
dB
dB
UI
UI
UI
UI
%
%
V
V
V
V
V
V
3