XRT72L13 datasheet(20/370 Pages) EXAR

20 / 370 page

XRT72L13

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M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

REV. P1.0.6

PRELIMINARY

RxDS1Clk_7

Receive DS1 Clock Output - Channel 7:

This pin outputs a DS1 (1.544MHz) clock signal to the Terminal

Equipment. The XRT72L13 will update the data on the

"RxDS1Data_7" line, upon the rising edge of this signal.

NOTES:

1. This output pin is inactive if the corresponding M12 DEMUX is

de-multiplexing an ITU-T G.747 data stream.

2. This pin will output a DS2 rate clock signal (6.312MHz) if M12

# 2 is bypassed.

RxDS1Data_6

RxHDLC_Data_6

Receive DS1/E1 Data Output - Channel 6/Receive HDLC Control-

ler Block Output - Bit 6:

The funtion of this output pin depends upon whether the XRT72L13 is

operating in the "Multiplexer/De-Multiplexer" Mode or in the "High

Speed HDLC Controller" Mode.

Receive DS1/E1 Data Output - Channel 6: (Multiplexer/De-Multi-

plexer Mode):

This pin outputs either a DS1 or E1 signal from the M12 multiplexer.

Each bit, within the DS1 or E1 data stream is output upon the rising

edge of RxDS1Clk_6.

Receive HDLC Controller Block Output - Bit 6: (High Speed HDLC

Controller Mode)

This output pin along with RxHDLC_Data[0:5] and RxHDLC_Data_7

output the contents of all HDLC frames that have been received (via

the DS3 payload) from the remote terminal equipment.

The data on this output pin is updated upon the rising edge of "RxH-

DLCClk".

NOTE: This pin is inactive while the Receive HDLC Controller is

receiving the "Flag Sequence" octet.

GND

****

Ground Pin

RxDS1Clk_6

Receive DS1/E1 Clock Output - Channel 6:

This pin outputs either a DS1 (1.544MHz) or an E1 (2.048MHz) clock

signal to the Terminal Equipment. The XRT72L13 will update the data

on the "RxDS1Data_6" line, upon the rising edge of this signal.

PIN DESCRIPTIONS

PIN #NAME

TYPE

DESCRIPTION

XRT72L13 Datasheet(PDF) 20 Page - Exar Corporation

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