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參數(shù)資料
| 型號(hào)： | CDP1877 |
| 廠商： | Intersil Corporation |
| 英文描述： | Programmable Interrupt Controller (PIC)(可編程中斷控制器) |
| 中文描述： | 可編程中斷控制器（PIC）（可編程中斷控制器） |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 45K |
| 代理商： | CDP1877 |
4-87
Second (High-Order Address) Byte
This byte is the High-Order vector Address that was written
into the PIC’s Page Register by the user. The PIC does not
alter this value in any way.
High-Order Vector Address
Third (Low-Order Address) Bytes
Bits indicated by A
X
(x = 4 to 7) are the same as pro-
grammed into the control register. All other bits are
generated by the PIC.
REGISTER ADDRESSES
In order to read/write or obtain an interrupt vector from any
PIC in the system, all chip selects (CS/A
X
, CS/A
Y
, CS, CS)
must be valid during TPA.
CS/A
X
and CS/A
Y
are multiplexed addresses; both must be
high during TPA, and set according to this table during TPB
to access the proper register.
BUS 7
BUS 0
A15
A14
A13
A12
A11
A10
A9
A8
INTERVAL 2
BUS 7
BUS 0
A7
A6
A5
A4
0
INTERVAL 4
BUS 7
BUS 0
A7
A6
A5
0
0
INTERVAL 8
BUS 7
BUS 0
A7
A6
0
0
0
INTERVAL 16
BUS 7
BUS 0
A7
0
0
0
0
Indicates active interrupt input number (binary 0 to 7).
I2
I1
I0
I2
I1
I0
I2
I1
I0
I2
I1
I0
CS/A
X
CS/A
Y
RD
WR
ACTION TAKEN
1
0
0
1
READ Long Branch instruction and vector for highest
priority unmasked interrupt pending.
1
0
1
0
WRITE to Page Register
0
1
1
0
WRITE to Control Register
0
0
0
1
READ Status Register
0
0
1
0
WRITE to Mask Register
0
1
0
1
READ Polling Register (Used to identify INTERRUPT
source if Polling technique rather than INTERRUPT ser-
vice is used.)
1
1
X
X
Unused condition
CDP1877, CDP1877C
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CDP1877C | Programmable Interrupt Controller (PIC)(可編程中斷控制器) |
| CDP1877CE | Programmable Interrupt Controller (PIC) |
| CDP1877E | Programmable Interrupt Controller (PIC) |
| CDP1878CD | CMOS Dual Counter-Timer |
| CDP1878C | CMOS Dual Counter-Timer(CMOS 雙路計(jì)時(shí)器／定時(shí)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CDP1877C | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Programmable Interrupt Controller (PIC) |
| CDP1877CD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| CDP1877CE | 制造商:Harris Corporation 功能描述: |
| CDP1877CE WAF | 制造商:Harris Corporation 功能描述: |
| CDP1877D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
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