XR-T5794

5

Rev. 2.01

PIN DESCRIPTION (CONT’D)

PLCC

Pin #

SQFP

Pin #

Symbol

Type

Description

25

18

RXNEG4

O

Receiver 4 Negative Data Out. Negative data output in NRZ or RZ format for

receiver 4.

26

19, 20

27

21

LPMOD4

I

Loop Mode 4. If driven high the loopback mode of channel 4 will be set to re-

mote loop. Otherwise theloopback mode will remain at local loop. The

actual loopback will be activated when the LOOPEN4 is asserted.

28

22

LPMOD3

I

Loop Mode 3. If driven high the loopback mode of channel 3 will be set to re-

mote loop. Otherwise the loopback mode will remain at local loop. The

actual loopback will be activated when the LOOPEN3 is asserted.

29

23

RXIN4

I

Receiver 4 Input. Receiver 4 bipolar input connected to coupling capacitor or

pulse transformer.

30

24

LOS4

O

Receiver 4 Loss Of Signal. Asserted during LOS condition. Clear otherwise.

31

25

LOS3

O

Receiver 3 Loss Of Signal. Asserted during LOS condition. Clear otherwise.

32

26

RXIN3

I

Receiver 3 Input. Receiver 3 bipolar input connected to coupling capacitor or

pulse transformer.

33

27

MSEL0

I

Monitor Channel Select 0. Select line, used to select a channel for monitoring

using the MOUT pin based on the following assignment:

MSEL2

MSEL1

MSEL0

SELECTS

0

0

0

Line 1 Receive

0

0

1

Line 2 Receive

0

1

0

Line 3 Receive

0

1

1

Line 4 Receive

1

0

0

Line 1 Transmit

1

0

1

Line 2 Transmit

1

1

0

Line 3 Transmit

1

1

1

Line 4 Transmit

Note

The monitoring is only done on the NRZ data output signals from the receiver or from the

transmitter line side.

34

28

MSEL1

I

Monitor Channel Select 1. See table above.

35

29, 30

RGND

GND

Receive Ground.

36

31

RGND

GND

Receive Ground.

37

32

MSEL2

I

Monitor Channel Select 2. See table above.

38

33

RXIN2

I

Receiver 2 Input. Receiver 2 bipolar input connected to coupling capacitor or

pulse transformer.

39

34

LOS1

O

Receiver 1 Loss Of Signal. Asserted during LOS condition. Clear otherwise.

40

35

LOS2

O

Receiver 2 Loss Of Signal. Asserted during LOS condition. Clear otherwise.

41

36

RXIN1

I

Receiver 1 Input. Receiver 1 bipolar input connected to coupling capacitor or

pulse transformer.

42

37

LPMOD2

I

Loop Mode 2. If driven high the loopback mode of channel 2 will be set to re-

mote loop. Otherwise the loopback mode will remain at local loop. The

actual loopback will be activated when the LOOPEN2 is asserted.