XRT75R03D datasheet(13/134 Pages) EXAR

13 / 134 page

XRT75R03D

THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER

REV. 1.0.2

TRANSMIT LINE SIDE PINS

PIN #SIGNAL NAME

TYPE

DESCRIPTION

TTIP_0

TTIP_1

TTIP_2

Transmit TTIP Output - Positive Polarity Signal - Channel 0:

Transmit TTIP Output - Positive Polarity Signal - Channel 1:

Transmit TTIP Output - Positive Polarity Signal - Channel 2:

These output pins along with the corresponding TRING_n output pins, function

as the Transmit DS3/E3/STS-1 Line output signal drivers for a given channel, of

the XRT75R03D.

Connect this signal and the corresponding TRING_n output signal to a 1:1

transformer.

Whenever the Transmit Section of the Channel generates and transmits a posi-

tive-polarity pulse onto the line, this output pin will be pulsed to a "higher-volt-

age" than its corresponding TRING_n output pins.

Conversely, whenever the Transmit Section of the Channel generates and trans-

mit a negative-polarity pulse onto the line, this output pin will be pulsed to a

"lower-voltage" than its corresponding TRING_n output pin.

NOTE: This output pin will be tri-stated whenever the corresponding TxON_n

input pin or bit-field is set to "0".

TRing_0

TRing_1

TRing_2

Transmit Ring Output - Negative Polarity Signal - Channel 0:

Transmit Ring Output - Negative Polarity Signal - Channel 1:

Transmit Ring Output - Negative Polarity Signal - Channel 2:

These output pins along with the corresponding TTIP_n output pins, function as

the Transmit DS3/E3/STS-1 Line output signal drivers for a given channel,

within the XRT75R03D.

Connect this signal and the corresponding TTIP_n output signal to a 1:1 trans-

former.

Whenever the Transmit Section of the Channel generates and transmits a posi-

tive-polarity pulse onto the line. This output pin will be pulsed to a "lower-volt-

age" than its corresponding TTIP_n output pins.

Conversely, whenever the Transmit Section of the Channel generates and trans-

mit a negative-polarity pulse onto the line. This output pin will be pulsed to a

"higher-voltage" than its corresponding TTIP_n output pin.

NOTE: This output pin will be tri-stated whenever the corresponding TxON_n

input pin or bit-field is set to "0".

XRT75R03D Datasheet(PDF) 13 Page - Exar Corporation

XRT75R03D Datasheet(HTML) 13 Page - Exar Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL