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| 型號(hào)： | 82C836A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Single-Chip 386sx AT |
| 中文描述： | 單芯片386sx在 |
| 文件頁(yè)數(shù)： | 26/205頁(yè) |
| 文件大?。?/td> | 3878K |
| 代理商： | 82C836A |
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Table 2-6.
Miscellaneous Signals (continued)
Pin
Type
Name
Description
141
Bidirectional
MFP5
Multi Function Pin 5 is a bidirectional pin that has two
functions (see -DACK5 in ‘‘Reset Strap Options’’): In
internal RTC mode, MFP5 is the Power Sense (PS) input,
active high, indicating the state of the battery. The PS
signal should be powered from the battery back-up circuit.
In external RTC mode, MFP5 is the Real Time Clock Chip
Select (-RTCCS) active low. It is a decode of the I/O
address range 070H-071H.
140
Input
MFP4
Multi Function Pin 4 is an input that has two functions (see
-DACK5 in ‘‘Reset Strap Options’’). In internal RTC mode,
MFP4 is the 32KHz Oscillator Input, which should be
connected to a square wave source with a frequency of
32.768KHz. This input signal is the timing reference for
the internal RTC of the 82C836. In external RTC mode,
MFP4 is Interrupt Request 8 (IRQ08) from the external
RTC.
126
Input
MFP3
Multi Function Pin 3 is an input pin driven by the -RESET2
signal from the 8042 keyboard controller. In response to
this input (active low), the 82C836 generates CPURST to
reset the CPU. The signal is under software control via the
8042. This pin may have an alternate function in a future
version of the 82C836, but only the -RESET2 function is
available at present.
130
Output
MFP2
Multi Function Pin 2 is an output pin used for 8042 Chip
Select (-8042CS). This signal, an active-low output to the
8042 keyboard controller, is a decode of the I/O address
range 060H-06FH. This pin may have an alternate function
in a future verison of the 82C836, but only the -8042CS
function is available at present.
129
Input
MFP1
Multi Function Pin 1 is an input pin driven by the
GATEA20 signal from the 8042 keyboard controller. In
response to a low level on this pin, the 82C836 keeps
MODA20 low during CPU cycles (depending on Fast
GATEA20, port 92H). A high level on GATEA20 allows
MODA20 to follow A20. This pin may have an alternate
function in a future version of the 82C836, but only the
GATEA20 function is available at present.
125
Input
MFP0
Mutli Function Pin 0 is an input pin acting as Interrupt
Request 1 (IRQ1). This signal, an active-high input from
the 8042 keyboard controller, is used by the 82C836’s
internal interrupt controller. This pin may have an alternate
function in a future version of the 82C836, but only the
IRQ1 function is available at present.
Signal Pinouts
The signal pinouts for the 82C836 CHIPSet are summarized in Tables 2-7 and 2-8.
Pin Assignments
Signal Pinouts
I
Chips and Technologies, Inc.
P R E L I M I N A R Y
Revision 3.0
2-9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 82C836A-16 | Single-Chip 386sx AT |
| 82C836A-20 | Single-Chip 386sx AT |
| 82C836B | Single-Chip 386sx AT |
| 82C862 | FireLink USB Dual Controller Quad Port USB |
| 82C931 | Plug and Play Integrated Audio Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 82C836A-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Chip 386sx AT |
| 82C836A-20 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Chip 386sx AT |
| 82C836B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Chip 386sx AT |
| 82C83H | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Octal Latching Inverting Bus Driver |
| 82C84 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Clock Generator Driver |
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