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參數資料
| 型號： | DS1077 |
| 英文描述： | 10/100/1000 Base-T Ethernet LAN Switch |
| 中文描述： | EconOscillator™/分頻器 |
| 文件頁數： | 6/21頁 |
| 文件大?。?/td> | 286K |
| 代理商： | DS1077 |
DS1077
6 of 21
EN0 (bit)
(Default EN0 = 1)
1)
If EN0 = 1 and PDN0 = 0 the CTRL0 pin functions as an Output Enable for OUT0, the frequency of
the output being determined by the SEL0 bit.
2)
If PDN0 = 1, the EN0 bit is ignored, CTRL0 will function as a power-down, and output OUT0 will
always be enabled on power-up, its frequency being determined by the SEL0 bit.
3)
If EN0 = 0 the function of CTRL0 is determined by the SEL0 and PDN0 bits (see Table 1).
SEL0
(Default SEL0 = 1)
1)
If SEL0 = 1 and EN0 = PDN0 = 0, the CTRL0 pin determines the state of the MUX (i.e., the output
frequency of OUT0).
2)
If CTRL0 = 0 the output will be the Master clock frequency.
3)
If CTRL0 = 1 the output will be the output frequency of the M prescaler.
4)
If either EN0 or PDN0 = 1 then SEL0 determines the frequency of OUT0 when it is enabled.
5)
If SEL0 = 0 the output will be the Master clock frequency.
6)
If SEL0 = 1 the output will be the output frequency of the M prescaler (see Table 1).
PDN0
(Default PDN0 = 0)
1)
This bit (if set to 1) causes CTRL0 to perform a power-down function, regardless of the setting of the
other bits.
2)
If PDN0 = 0 the function of CTRL0 is determined by the values of EN0 and SEL0.
NOTE:
When EN0 = SEL0 = PDN0 = 0, CTRL0 also functions as a power-down. This is a special case where all
the OUT0 circuitry is disabled even when the device is powered up for power to saving when OUT0 is
not used (see Table 1).
PDN1
(Default PDN1 = 0)
1)
If PDN1 = 1, CTRL1 will function as a power-down.
2)
If PDN1 = 0, CTRL1 functions as an output enable for OUT1 only (see Table 2.)
NOTE (ON OUTPUT ENABLE AND POWER-DOWN):
1)
Both enables are “smart” and wait for the output to be low before going to Hi-Z.
2)
Power-down sequence first disables both outputs before powering down the device.
3)
On power-up the outputs are disabled until the clock has stabilized (~8000 cycles).
4)
In power-down mode, the device cannot be programmed.
5)
A power-down command must persist for at least two cycles of the lowest output frequency plus 10 s.
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| DS1086Z | DS1086 Spread-Spectrum EconOscillator |
| DS1094L | 10/100/1000 Base-T Ethernet LAN Switch |
| DS1094LU | Multiphase Spread-Spectrum EconOscillator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1077-BB_B4 | 制造商:Distributed By MCM 功能描述:DS1077 PROGRAMMABLE OSCILLAT OSCILLATOR BREAKOUT 制造商:Distributed By MCM 功能描述:Four Channel Relay Breakout Board with Optoisolator |
| DS1077L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:3V EconOscillator/Divider |
| DS1077LU-40 | 功能描述:可編程振蕩器 EconOscillator/Dvdr 40Mhz 118mil 2-Wire RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
| DS1077LU-40+ | 功能描述:可編程振蕩器 EconOscillator/Dvdr 40Mhz 118mil 2-Wire RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
| DS1077LU-40+T | 功能描述:可編程振蕩器 EconOscillator/Dvdr 40Mhz 118mil 2-Wire RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
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