參數(shù)資料
型號: PSB21911
廠商: SIEMENS A G
元件分類: 數(shù)字傳輸電路
英文描述: ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE
中文描述: DATACOM, ISDN ECHO CANCELLER
文件頁數(shù): 27/164頁
文件大?。?/td> 1401K
代理商: PSB21911
PSB 21911
PSF 21911
Operating Modes
Semiconductor Group
27
11.97
Table 3
Test Modes
Table 4
DOUT Driver Modes
1)
Used for Quiet Mode and Return Loss measurements
2)
Used for Pulse Mask measurements
3)
Used for Insertion Loss, Power Spectral Density and Total Power measurements
1)
In stand-alone mode and μP mode
2)
Only in stand-alone mode. In μP mode the output driver of pin DOUT is selected via bit DOD in the ADF2
register
3)
External pull-up resistors required (typ.1 k
)
Test-Mode
Bit TM1/
Pin RES
0
1
0
1
Bit TM2/
Pin TSP
0
1
1
0
Master-Reset
1)
Send Single-Pulses
2)
Data-Through
3)
Normal
Mode
Pin
RES
1)
Pin
TSP
2)
Pin /
Bit
DOD
Pin DOUT Output Driver
Value
DOUT in
active time
slot
0
low
1
int. pull-up
0
low
1
high
0
low
1
floating
DOUT in
passive time
slot
int. pull-up
Pin-Reset
0
0
x
Normal
(Tristate)
1
0
0
high Z
Normal
(Open Drain
3)
)
1
0
1
floating
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