參數(shù)資料
型號(hào): CD1865
廠商: Intel Corp.
英文描述: Intelligent Eight-Channel Communications Controller
中文描述: 智能八通道通信控制器
文件頁數(shù): 104/150頁
文件大?。?/td> 871K
代理商: CD1865
CD1865
Intelligent Eight-Channel Communications Controller
104
Datasheet
Bit
Description
Bits 7:6
.
An accepted interrupt acknowledge cycle pushes a new context onto the stack.
NOTE:
The Status bits are positive true, and the * Pins are negative true. The
...int
(internal) values are
local to the device being read, and the
...ext
(external) values are the current external status on the
pin, that is, the result of the wire-OR
ed function.
Bits 5:4
.
Bits 3:2
.
Bits 1:0
.
ILV1
ILV0
Context
0
0
Not in a service request context
0
1
CD1865 is in a Receive Service Request context
1
1
CD1865 is in a Transmit Service Request context
1
0
CD1865 is in a Modem Service Request context
RREQext
RREQint
Context
0
0
No interrupts
0
1
Invalid state
1
1
The location device requests a receive interrupt.
1
0
External interrupt pending. The local device has no receive
interrupts.
TREQext
TREQint
Context
0
0
No interrupts
0
1
Invalid state
1
1
The location device requests a transmit interrupt.
1
0
External interrupt pending. The local device has no transmit
interrupts.
MREQext
MREQint
Context
0
0
No interrupts
0
1
Invalid state
1
1
The location device requests a modem interrupt.
1
0
External interrupt pending. The local device has no modem
interrupts.
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