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參數(shù)資料
| 型號： | XRT8001ID |
| 廠商： | EXAR CORP |
| 元件分類： | 時鐘及定時 |
| 英文描述： | WAN Clock for T1 and E1 Systems |
| 中文描述： | 8001 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO18 |
| 封裝： | 0.300 INCH, SOIC-18 |
| 文件頁數(shù)： | 30/48頁 |
| 文件大?。?/td> | 1054K |
| 代理商： | XRT8001ID |
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XRT8001
30
Rev. 1.01
Value of “M”
Value to be Written into
Command Register CR2
0000X
0001X
001XX
X1XX or 1XXX
1
2
4
8
Table 7. Relationship Between the Value of
“M” and the Value to Be Written into Command
Register CR2 (in Order to Configure the “CLK1”
Output Frequency)
Note:
The expression “X” indicates a “Don’t Care” value for
that particular bit-field.
Command Register, CR2 (Address = 0x02)
D4
D3
D2
SEL14
SEL13
SEL12
Value from Table 7
D1
D0
SEL11
SEL10
Step 5
– Specify the value for “M” (e.g., as in the “M x
2.048MHz” clock signal) which is to be the output on
the “CLK2” output pin.
This is accomplished by reviewing Table 8, and deter-
mining the 5-bit binary value which corresponds with
the desired value of “M”. Afterwards, the user should
write this value into Command Register, CR3.
Value of “M”
Value to be Written into
Command Register CR3
0000X
0001X
001XX
X1XXX or 1XXXX
1
2
4
8
Table 8. Relationship Between the Value of
“M” and the Value to Be Written into Command
Register CR3 (in Order to Configure the “CLK2”
Output Frequency)
Note:
The expression “X” indicates a “Don’t Care” value
for that particular bit-field.
Command Register, CR3 (Address = 0x03)
D4
D3
D2
SEL24
SEL23
SEL22
Value from Table 8
D1
D0
SEL21
SEL20
Step 6
– Enable any of the following output signals as
appropriate: “SYNC”, “CLK1”, “CLK2” and
“LOCKDET”.
This is accomplished by writing a “1” into the corre-
sponding bit-fields, within Command Register CR4, as
illustrated below:
Command Register CR4, (Address = 0x04)
D4
D3
SYNCEN
CLK1EN
CLK2EN
1
1
D2
D1
D0
LDETDIS2
0
LDETDIS1
0
1
6.8 The "Forward/Slave" Mode
When the XRT8001 WAN Clock has been configured to
operate in the “Forward/Slave” Mode, then it will accept
an 8kHz clock signal via the “Reference Clock” input at
FIN (pin 3). In response to this clock signal, the
XRT8001 WAN Clock will output either a “L x 56kHz” or
“L x 64kHz” clock signal via the “Clock Output pins”
(CLK1 and CLK2); where L can range in value from 1 to
32.
A simple illustration of the XRT8001 WAN Clock
operating in the "Forward/Slave" Mode” is presented in
Figure 18.
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| XRT8001IP | WAN Clock for T1 and E1 Systems |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT8001ID-F | 功能描述:鎖相環(huán) - PLL 3.3V-5V temp -45 to 85C RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| XRT8001ID-F | 制造商:Exar Corporation 功能描述:WAN Clock IC |
| XRT8001IDTR-F | 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| XRT8001IP | 制造商:EXAR 制造商全稱:EXAR 功能描述:WAN Clock for T1 and E1 Systems |
| XRT8001IP-F | 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
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