參數(shù)資料
型號(hào)： M38855FE-HP
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁(yè)數(shù)： 63/103頁(yè)
文件大?。?/td> 1580K
代理商： M38855FE-HP
3885 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
62
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 3885 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 3885 drives CLKRUN to “L” for requesting the
PCI clock generator to restart the LCLK if the clock is slowed
down or stopped.
L
C
L
K
Bus CLKRUN
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3
8
8
5
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N
B
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s
S
E
R
I
R
Q
Ho
s
t
S
E
R
I
R
Q
3885 SERIRQ
Interrupt request
Internal restart
request signal
φ
Start frame
R
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a
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f
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L
C
L
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B
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N
3885 CLKRUN
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p
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q
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s
t
Internal inhibition request signal
Bus SERIRQ
IRQSER cycle
Inhibition
request
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M38855FF-HP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38855M1-XXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38855M2-XXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38855M3-XXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38855M4-XXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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