CS61574A-75 Cirrus Logic, Inc., CS61574A-75 Datasheet - Page 3

• Manufacturer Part Number: CS61574A-75
• Description: T1-E1 Line Interface Unit for Stratum-4 applications
• Manufacturer: Cirrus Logic, Inc.

ANALOG SPECIFICATIONS
Notes: 11. Using a 0.47 F capacitor in series with the primary of a transformer recommended
DS154F2
Transmitter
AMI Output Pulse Amplitudes
E1 Zero (space) level (LEN2/1/0 = 0/0/0)
Recommended Output Load at TTIP and TRING
Jitter Added During Remote Loopback
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
Transmitter Return Loss
Transmitter Short Circuit Current
Driver Performance Monitor
MTIP/MRING Sensitivity:
Differential Voltage Required for Detection
12. Pulse amplitude measured at the output of a 1:1 or 1:1.26 transformer across a 75
13. Pulse amplitude measured at the output of a 1:1.26 transformer across a 120
14. Pulse amplitude measured at the output of a 1:1.15 transformer across a 100
15. Pulse amplitude measured at the DSX-1 cross-connect across a 100
16. Input signal to RTIP/RRING is jitter free. Values will reduce slightly if jitter free clock is input to TCLK.
17. Not production tested. Parameters guaranteed by design and characterization.
18. Return loss = 20 log
19. 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.
line length setting LEN2/1/0 = 0/1/0.
LEN2/1/0 = 0/1/1, 1/0/0, 1/0/1, 1/1/0, or 1/1/1 using a 1:1.15 transformer and the length of #22 AWG,
ABAM, or equivalent cable specified in Table 3.
z
and a 1:1 transformer terminated with a 75
120
during the transmission of an all ones data pattern for LEN2/1/0 = 0/0/0.
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
(TA = -40 C to 85 C; TV+, RV+ = 5.0V 5%; GND = 0V)
1
load
(Notes 11, 17, 18)
+z
0
load
(Notes 11, 17)
(Notes 11, 19)
(Notes 11, 17)
(Notes 11, 17)
)/(z
1
resistor across the secondary of a 1:1.26 transformer
-z
(Note 11)
(Note 12)
(Note 13)
(Note 14)
(Note 15)
(Note 16)
0
)) where z
load, or a 1:1.26 transformer terminated with a
1
-0.237
= impedance of the transmitter, and
2.14
12.6
Min
-0.3
2.7
2.7
2.4
-29
14
10
-5
-5
8
-
-
-
-
-
-
-
-
0.005
0.008
0.010
0.015
2.37
Typ
-38
3.0
3.0
3.0
0.2
0.6
75
15
-
-
-
-
-
-
-
-
load for line length settings
CS61574A CS61575
load for line length
load for
0.237
0.025
0.025
Max
0.02
0.05
17.9
2.6
3.3
3.3
3.6
0.3
0.5
50
5
5
-
-
-
-
-
-
load for
mA RMS
Units
dBm
dB
dB
dB
dB
dB
UI
UI
UI
UI
%
%
V
V
V
V
V
V
V
3