參數(shù)資料
型號(hào): DS1075M-60
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: XO, clock
英文描述: 60 MHz, OTHER CLOCK GENERATOR, PDIP8
封裝: 0.300 INCH, DIP-8
文件頁(yè)數(shù): 18/18頁(yè)
文件大?。?/td> 251K
代理商: DS1075M-60
DS1075
9 of 18
edge of SELX and the first rising edge of the externally derived clock is t SIE . Approximate maximum
and minimum values of these parameters are:
tLOW (min) = tI/2
tLOW (max) = 3tI/2 + tElow
tSIE (min) = tI/2
tSIE (max) = 3 tI/2 + tEhigh
NOTE:
In each case there will be a small additional delay due to internal propagation delays.
POWER-DOWN CONTROL
If the PDN bit is set to “1”, the PDN / SELX pin can be used to power-down the device. If PDN is high
the device will run normally.
POWER-DOWN
If PDN is taken low a power-down sequence is initiated. The “Enabling Sequencer” is used to execute
events in the following sequence:
1. Disable OUT (same sequence as when OE is used) and reset N counters.
2. When OUT is low, switch OUT to high-impedance state.
3. Disable MCLK (and OUT0 if EN0 bit = 0), switch OUT0 to high impedance state.
4. Disable internal oscillator and OSCIN buffer.
POWER-UP
When PDN is taken to a high level the following power-up sequence occurs:
1. Enable internal oscillator and/or OSCIN buffer.
2. Set M and N to maximum values.
3. Wait approximately 256 cycles of MCLK for it to stabilize.
4. Reset M and N to programmed values.
5. Enable OUT0 (assuming EN0 bit = 0).
6. Enable OUT.
Steps 2 through 4 exist to allow the oscillator to stabilize before enabling the outputs.
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