XR-T5794 Datasheet, PDF (4/20 Pages) Exar Corporation – Quad E-1 Line Interface Unit

XR-T5794
PIN DESCRIPTION
PLCC
Pin #
1
SQFP
Pin #
71
Symbol
MOUT
2
72
TV_DD
3
73
AGND
4
74
TXOUT3
5
75
TV_SS
6
76
TV_DD
7
77
TXOUT4
8
78
TXEN4
9
79
TXEN3
10
2
MONEN
11
3,4
AV_DD
12
5
TXCLK4
13
6
TXPOS4
14
7
TXNEG4
15
8
TXCLK3
16
9
TXPOS3
17
10
TXNEG3
18
11
LOOPEN4
19
12
LOOPEN3
20
13
GND
21
14
V_DD
22
15
RXPOS3
23
16
RXNEG3
24
17
RXPOS4
Type
O
V_DD
GND
O
V_SS
V_DD
O
I
I
I
V_DD
I
I
I
I
I
I
I
I
GND
V_DD
O
O
O
Description
Signal Monitor Output. If MONEN=1, this output tracks the selected signal.
Hi-Z otherwise. The channel selection is done using MONSEL[2..0] inputs.
Transmit V_DD. )5V ($5%).
Analog Ground.
Transmitter 3 Output. Transmitter 3 bipolar output connected to coupling
capacitor or pulse transformer by a resistor.
Transmit V_SS. -5V ($5%).
Transmit V_DD. +5V ($5%).
Transmitter 4 Output. Transmitter 4 bipolar output connected to coupling
capacitor or pulse transformer by a resistor.
Transmitter 4 Output Enable. If driven high the transmitter 4 output drivers
are enabled. Hi-Z otherwise.
Transmitter 3 Output Enable. If driven high the transmitter 3 output drivers
are enabled. Hi-Z otherwise.
Monitor/Test Output Enable. If driven high the output driver of the MOUT
output is enabled. Hi-Z otherwise.
Analog V_DD.
Transmitter 4 Clock Input. Apply logic one when RZ signals are supplied to
data inputs.
Transmitter 4 Positive Data In. Positive data input in NRZ or RZ format for
transmitter 4.
Transmitter 4 Negative Data In. Negative data input in NRZ or RZ format for
transmitter 4.
Transmitter 3 Clock Input. Apply logic one when RZ signals are supplied to
data inputs.
Transmitter 3 Positive Data In. Positive data input in NRZ or RZ format for
transmitter 3.
Transmitter 3 Negative Data In. Negative data input in NRZ or RZ format for
transmitter 3.
Loop Enable 4. If driven high the specified loop type will be enabled for chan-
nel 4. Otherwise normal operation will continue.
Loop Enable 3. If driven high the specified loop type will be enabled for chan-
nel 3. Otherwise normal operation will continue.
Digital Ground.
Digital V_DD. +5V ($5%).
Receiver 3 Positive Data Out. Positive data output in NRZ or RZ format for
receiver 3.
Receiver 3 Negative Data Out. Negative data output in NRZ or RZ format for
receiver 3.
Receiver 4 Positive Data Out. Positive data output in NRZ or RZ format for
receiver 4.
Rev. 2.01
4