XR-T5793 Datasheet, PDF (4/16 Pages) Exar Corporation – Quad E1 Line Interface Unit

XR-T5793
PIN DESCRIPTION
PLCC
Pin #
1
2
3
4
SQFP
Pin #
71
72
73
74
Symbol
NC
TV_DD
AGND
TXOUT3
5
75
TV_SS
6
76
TV_DD
7
77
TXOUT4
8
78
TXEN4
9
79
TXEN3
10 1, 2, 80
NC
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
25
18
RXNEG4
26
19,20
RV_DD
Type
V_DD
GND
O
V_SS
V_DD
O
I
I
NC
V_DD
I
I
I
I
I
I
I
I
GND
V_DD
O
O
O
O
V_DD
Description
No Connect.
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.
No Connect.
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
channel 4. Otherwise normal operation will continue.
Loop Enable 3. If driven high the specified loop type will be enabled for
channel 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 Positive 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.
Receiver 4 Positive Data Out. Negative data output in NRZ or RZ format for
receiver 4.
Receive V_DD. +5V ($5%).
Rev. 2.00
4