參數(shù)資料
型號: STLC7546
廠商: 意法半導(dǎo)體
英文描述: MODEM (V.34bis) Analog Front End(調(diào)制解調(diào)器模擬前端)
中文描述: 調(diào)制解調(diào)器(V.34bis)模擬前端(調(diào)制解調(diào)器模擬前端)
文件頁數(shù): 8/16頁
文件大?。?/td> 131K
代理商: STLC7546
FUNCTIONALDESCRIPTION
(continued)
Figure 2 :
MixedMode
Sampling Period
1/2 Sampling Period
FS
TxDI
HC1, HC0
1X
Data Word Input
Control Word
01
SCLK
TxDO
Data Word Output
Register Word
7
5 - Control Register
This section defines the control and devicestatus
information.The registerprogrammingoccursonly
during Secondary Frame Synchronization.After a
resetcondition,thedevice is alwaysin data mode.
Table2
Bits
0
1
Symbol
-
AUX/MAIN
Function
-
Auxiliary / Main receive input
Single-ended /Differential
Receive input
Oversampling bit 0
Oversampling bit 1
Oversampling bit 2
Attenuator transmit bit 0
Attenuator transmit bit10
-
Voltage
(reference low/reference high)
Not used
Not used
Test mode bit 0
Test mode bit 1
Test mode bit 2
Test mode bit 3
2
SING/DIFF
3
4
5
6
7
8
0VS0
0VS1
0VS2
AT0
AT1
-
9
RL/RH
10
11
12
13
14
15
NC1
NC2
TEST0
TEST1
TEST2
TEST3
Table3 :
Auxiliary/MainInput (AUX/MAIN)
D1
0
Main receive input
1
Auxiliary receive input
Function
Table 4 :
Single-ended/DifferentialInputs
(SING/DIFF)
D2
0
Function
Differential input : +0dBr gain
Single-ended input : 0dBr gain
Differential input : +6dBr gain
1
Note :
0dBr = 2 x V
REF
peak-to-peak signal.
Table 5 :
OversamplingRatio
D5
D4
D3
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Function
160
192
Reserved
Reserved
Reserved
64
96
128
Table 6 :
TransmitAttenuator
D7
0
0
1
1
D6
0
1
0
1
Function
Infinite
Reserved
-6dB
0dB
Table 7 :
Reserved Mode
D15
0
D14
0
D13
0
D12
0
D11
0
D10
0
D9
0
Function
Reserved
STLC7546
8/16
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