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STLC60134 数据表(PDF) 6 Page - STMicroelectronics

部件名 STLC60134
功能描述  TOSCA INTEGRATED ADSL CMOS ANALOG FRONT-END CIRCUIT
PDF  22 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STLC60134 数据表(HTML) 6 Page - STMicroelectronics

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ATU-R END: BLOCK DIAGRAM
The ATU-R side block diagram is equal to the
ATU-C side block diagram with the following dif-
ferences:
- The transformer ratio is 1:1
- Termination resistors are 50
Ω for 100Ω lines.
An LP filter may be used on the TX path to re-
duce DMT sidelobes and out of band noise influ-
ence on the receiver. On the RX path, a HP filter
must be used in order to reduce the echo signal
level and to avoid saturation of the input stage of
the receiver.
The POTS filter is used in both directions to re-
duce crosstalk between ADSL signals and POTS
speech and signalling. Low pass POTS filter can
be very simple for Lite - ADSL application
LP138KHz
SC2
XTRAL
DRIVER
RXP(0:1)
RXN(0:1)
TXP
TXN
D98TL357mod
35.328MHz
POTS
LP
POTS FILTER
LINE
Zo=100
HP POTS FILTER
2:1
12.5
12.5
LPF
GRX
RR
2R
2R
GTX
LINE
DRIVER
HPF
LNA
0..31dB
-15..0dB
PD
LP 1.1MHz
HC2
12-bit A/D
CONVERTER
12-bit D/A
CONVERTER
MASTER CLOCK
35.328MHz
NIBBLES 17.664MHz
WORD 8.832/4.416MHz
RXn
8.832MS/s
4.416MS/s
CTRLIN
LTNT=1
RESETN
TXn
8.832MS/s
4.416MS/s
4
4
RXT1
RXT2
TO
STLC60135
Figure 4. ATU-C END Block Diagram.
LP 1.1MHz
HC2
VCODAC
XTAL
DRIVER
RXP(0:1)
RXN(0:1)
TXP
TXN
D98TL358mod
35.328
MHz
VCXOUT
POTS
LP
POTS FILTER
LINE
Zo=100
HP POTS FILTER
1:1
50
50
HPF
GRX
RR
2R
2R
GTX
LI NE
DRIVER
LPF
LNA
0. .31dB
-15..0dB
PD
LP 138KHz
SC2
12- bit A/D
CONVERTER
12-bit D/A
CONVERTER
MASTER CLOCK
35.328MHz
NIBBLES 17.664MHz
WORD 8.832/4.416MHz
RXn
8.832MS/s
4.416MS/s
CTRLIN
LTNT=0
RESETN
TXn
8.832MS/s
4.416MS/s
4
4
RXT1
RXT2
TO
STLC60135
Figure 5. ATU-R END Block Diagram.
STLC60134S
6/22



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