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參數(shù)資料
| 型號(hào)： | M38837G6HP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80 |
| 文件頁數(shù)： | 55/81頁 |
| 文件大?。?/td> | 766K |
| 代理商： | M38837G6HP |
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Rev.1.00
Oct 26, 2004
page 59 of 79
3883 Group
Clock Restart/Stop Inhibition Request
Asserting the CLKRUN signal can request the host to restart for
clocks stopped or slowed down, or maintain the clock tending to
stop or slow down.
Figure 57 shows the timing diagram of clock restart request; Fig-
ure 58 shows an example of timing of clock stop inhibition
request.
Fig. 57 Timing diagram of clock restart request
Fig. 58 Timing diagram of clock stop inhibition request
(2) Clock stop inhibition request
In case the LPC clock stop inhibition bit (bit 2 of SERCON) is “1”
and the serialized interrupt request is held, if the LCLK tends to
stop, the 3883 drives CLKRUN to “L” for requesting the PCI clock
generator not to stop LCLK.
(1) Clock restart operation
In case the LPC clock restart enable bit (bit 1 of SERCON) is “1”
and the CLKRUN (BUS) is “H”, when the serialized interrupt re-
quest occurs, the 3883 drives CLKRUN to “L” for requesting the
PCI clock generator to restart the LCLK if the clock is slowed
down or stopped.
LCLK
Bus CLKRUN
Central Resource CLKRUN
3883 CLKRUN
Interrupt request
Internal inhibition request signal
Bus SERIRQ
IRQSER cycle
Inhibition
request
LCLK
Bus CLKRUN
Central Resource CLKRUN
3883 CLKRUN
Bus SERIRQ
Host SERIRQ
3883 SERIRQ
Interrupt request
Internal restart
request signal
φ
Start frame
Restart frame
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M38B49MFH-XXXXFP | 8-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PQFP80 |
| M38B49MFH-XXXXFP | 8-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PQFP80 |
| M38B57MC-XXXFP | 8-BIT, MROM, 4.19 MHz, MICROCONTROLLER, PQFP80 |
| M38B59MFH-XXXXFP | 8-BIT, MROM, MICROCONTROLLER, PQFP80 |
| M38B57MCH-XXXXFP | 8-BIT, MROM, MICROCONTROLLER, PQFP80 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M3883-BK001 | 制造商:Alpha Wire 功能描述: |
| M3883-BK002 | 制造商:Alpha Wire 功能描述: |
| M3883-BK005 | 制造商:Alpha Wire 功能描述: |
| M3883-BK199 | 制造商:Alpha Wire 功能描述: |
| M3883-BLACK-100 | 制造商:Alpha Wire 功能描述: |
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