Bt8370/8375/8376
5.0 Electrical/Mechanical Specifications
5.3 Electrical Characteristics
Fully Integrated T1/E1 Framer and Line Interface
Table 5-4. Line Interface Unit (RLIU, TLIU) Performance Characteristics
Parameter
Minimum
Typical
—
Maximum
–36
Units
dB
T1 Receiver Sensitivity (Attenuation @ 772 kHz)(1)
E1 Receiver Sensitivity (Attenuation @ 1024 kHz)(1)
T1/E1 Short-Haul Receiver Sensitivity (2)
+3
+3
+3
—
–43
dB
—
–20
dB
Transmitter XTIP, XRING Outputs:
Output Impedance (XOE = 0, high impedance)
Output Impedance (XOE = 1, unterminated)
T1 Pulse Amplitude, 100 Ω UTP
10
—
2.4
2.14
2.7
–10
100
1
3.0
2.37
3.0
—
—
2
3.6
2.6
3.3
+10
kΩ
kΩ
V
V
V
E1 Pulse Amplitude, 75 Ω Coax
E1 Pulse Amplitude, 120 Ω UTP
Space/Mark Peak Voltage Ratio
%
Receiver RTIP, RRING Inputs:
Input Impedance (unterminated)
Peak-to-Peak Voltage (measured deferentially)
—
—
10
6
12
7.2
kΩ
V
Receiver Phase-Lock Loop (RPLL)
Tolerable consecutive 0s before frequency lost
T1 Frequency Lock Range
23
–0.3
–0.4
75
1544
2048
100
+0.3
+0.4
bits
kHz
kHz
E1 Frequency Lock Range
Transmitter Phase-Lock Loop (TPLL):
T1 Frequency Lock Range
–0.7
–1.0
1544
2048
+0.7
+1.0
kHz
kHz
E1 Frequency Lock Range
Longitudinal Balance, Impedance to GND:
T1 (50 kHz < f < 1544 kHz)
35
35
42
40
—
—
dB
dB
E1 (50 kHz < f < 2048 kHz)
Receiver Noise Immunity (SNR):
15
—
—
15
18
18
20
dB
dB
Near-End Crosstalk (2 PRBS)
60 Hz Longitudinal
Transmitter Signal Power Level (3 kHz band):
Power @ 772 kHz
12
–25
15
–36
+19
—
dBm
dB
Power @ 1544 kHz (versus Power @ 772 kHz)
NOTE(S):
(1) Bt8370/8375/8376 receiver sensitivity includes 3 dB margin for 6000 feet (22 AWG) or 3.0 km (0.6 mm) cable.
(2) Bt8375 and Bt8376 receiver sensitivity is limited to –20 dB in both T1 and E1 modes.
N8370DSE
Conexant
5-3
CONEXANT [ CONEXANT SYSTEMS, INC ]
