Cirrus Logic CS61584A - Manual (Page 7)

CS61584A
DS261PP5 7
DS261PP5
ANALOG CHARACTERISTICS
(Continued)
Notes: 16. Using a transformer that meets the specifications in the Applications section.
17. Measured across 75
Ω
at the output of the transmit transformer for CON3/2/1/0 = 0/0/0/0.
18. Measured across 120
Ω
at the output of the transmit transformer for CON3/2/1/0 = 0/0/0/1.
19. Measured at the DSX-1 Cross-Connect for line length settings CON3/2/1/0 = 0/0/1/0, 0/0/1/1, 0/1/0/0,
0/1/0/1, and 0/1/1/0 after the length of #22 ABAM cable specified in Table 1.
20. Input signal to RTIP/RRING is jitter free. Values will reduce slightly if jitter free clock is input to TCLK.
21. Transformer secondary shorted with 0.5
Ω
resistor during the transmission of 100% ones.
22. At transformer secondary and measured from 10% to 90% of amplitude.
Parameter Symbol Min Typ Max Unit
Transmitter (Continued)
AMI Output Pulse Amplitudes (Note 16)
E1, 75
Ω
(Note 17)
E1, 120
Ω
(Note 18)
T1, DSX-1 (Note 19)
2.14
2.7
2.4
2.37
3.0
3.0
2.6
3.3
3.6
V
Recommended Transmitter Output Load (3.3 V) (Note 16)
T1
E1, 75
Ω
E1, 120
Ω
-
-
- 24.8
18.6
30.0 -
-
-
Ω
Recommended Transmitter Output Load (5.0 V) (Note 16)
T1
E1, 75
Ω
E1, 120
Ω
-
-
- 76.6
57.4
90.6 -
-
-
Ω
Jitter Added During Remote Loopback
10 Hz - 8 kHz
8 kHz - 40 kHz
10 Hz - 40 kHz
Broad Band
(Note 20)
-
-
-
- 0.020
0.015
0.015
0.045 -
-
-
-
UI
Power in 2 kHz band about 772 kHz (Notes 12 and 13)
(DSX-1 only)
12.6 15 17.9 dBm
Power in 2 kHz band about 1.544 MHz (Note 12 and 13)
(referenced to power in 2 kHz band at 772 kHz, DSX-1 only)
-29 -38 - dB
Positive to Negative Pulse Imbalance (Notes 12 and 13)
T1, DSX-1
E1, amplitude at center fo pulse interval
E1, width at 50% of nominal amplitude -
-5
-5
0.2
-
-
0.5
5
5
dB
%
%
Transmitter Return Loss (Notes 12, 13, and 14)
51 kHz - 102 kHz
102 kHz - 2.048 MHz
2.048 MHz - 3.072 MHz 8
14
10
25
18
12 -
-
-
dB
E1 Short Circuit Current 5.0 V (Note 21)
3.3 V
-
-
-
70
50
-
mA
rms
mA
rms
E1 and DSX-1 Output Pulse Rise/Fall Times (Note 22) - 50 - ns
E1 Pulse Width (at 50% of peak amplitude) - 244 - ns
E1 Pulse Amplitude for a space E1, 75
Ω
E1, 120
Ω
-0.237
-0.3
-
- 0.237
0.3
V
V
CS61584A
DS261F1 7