XRT72L13 Datasheet, PDF (36/370 Pages) Exar Corporation – M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

XRT72L13
M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC
REV. P1.0.6
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PRELIMINARY
PIN DESCRIPTIONS
PIN #
144
NAME
TxDS1Clk_4
145
TxDS1Data_3
146
GND
147
TxDS1Clk_3
148
TxDS1Data_2
149
TxDS1Clk_2
150
TxDS1Data_1
151
TxDS1Clk_1
152
TxDS1Data_0
153
TxDS1Clk_0
154
DS2InClk
TYPE
I
I
****
I
I
I
I
I
I
I
I
DESCRIPTION
Transmit DS1/E1 Clock Input - Channel 4:
This input pin accepts either a DS1 (1.544MHz) or an E1 (2.048MHz)
clock signal from the Terminal Equipment. The falling edge of this sig-
nal is used to sample the data at the "TxDS1Data_4" input pin.
Transmit DS1 Data Input - Channel 3:
This input pin accepts a DS1 signal from the Terminal Equipment.
This input pin is sampled upon the "falling edge" of the TxDS1Clk_3
signal.
NOTES:
1. This input pin is inactive if the corresponding M12 MUX is
multiplexing 3 E1's into an ITU-T G.747 data stream.
2. This input pin accepts DS2 data if M12 MUX # 1 is bypassed.
Ground Pin
Transmit DS1 Clock Input - Channel 3:
This input pin accepts a DS1 (1.544MHz) clock signal from the Termi-
nal Equipment. The falling edge of this signal is used to sample the
data at the "TxDS1Data_3" input pin.
NOTES:
1. This input pin is inactive if the corresponding M12 MUX is
multiplexing 3 E1's into an ITU-T G.747 data stream.
2. This input pin accepts a DS2 rate clock signal (6.312MHz) if
M12 MUX # 1 is bypassed.
Transmit DS1/E1 Data Input - Channel 2:
This input pin accepts either a DS1 or E1 signal from the Terminal
Equipment. This input pin is sampled upon the "falling edge" of the
TxDS1Clk_2 signal.
Transmit DS1/E1 Clock Input - Channel 2:
This input pin accepts either a DS1 (1.544MHz) or an E1 (2.048MHz)
clock signal from the Terminal Equipment. The falling edge of this sig-
nal is used to sample the data at the "TxDS1Data_2" input pin.
Transmit DS1/E1 Data Input - Channel 1:
This input pin accepts either a DS1 or E1 signal from the Terminal
Equipment. This input pin is sampled upon the "falling edge" of the
TxDS1Clk_1 signal.
Transmit DS1/E1 Clock Input - Channel 1:
This input pin accepts either a DS1 (1.544MHz) or an E1 (2.048MHz)
clock signal from the Terminal Equipment. The falling edge of this sig-
nal is used to sample the data at the "TxDS1Data_1" input pin.
Transmit DS1/E1 Data Input - Channel 1:
This input pin accepts either a DS1 or E1 signal from the Terminal
Equipment. This input pin is sampled upon the "falling edge" of the
TxDS1Clk_0 signal.
Transmit DS1/E1 Clock Input - Channel 1:
This input pin accepts either a DS1 (1.544MHz) or an E1 (2.048MHz)
clock signal from the Terminal Equipment. The falling edge of this sig-
nal is used to sample the data at the "TxDS1Data_0" input pin.
Transmit DS2 Clock Input
24