參數(shù)資料
型號: HMS30C7210
廠商: Electronic Theatre Controls, Inc.
英文描述: ARM Based 32-Bit Microprocessor
中文描述: 基于ARM的32位微處理器
文件頁數(shù): 100/161頁
文件大小: 973K
代理商: HMS30C7210
HMS30C7110
2003 MagnaChip Semiconductor Ltd. All Rights Reserved
Version 1.5
100
0
RO
0x0
This bit can be used in a prioritized interrupt environment to indicate
whether an interrupt is pending. When bit 0 is logic 0, an interrupt is
pending and the IIR contents may be used as a pointer to the
appropriate interrupt service routine. When bit 0 is logic 1, no
interrupt is pending.
Table 2.59 Interrupt Control Functions
FIFO
Mode
Only
Interrupt
Identification
Register
Interrupt Set and Reset Functions
Bit 3
Bit 2
Bit 1
Bit 0
Priority
Level
Interrupt
Type
Interrupt Source
Interrupt Reset Control
0
0
0
1
-
None
None
-
0
1
1
0
Highest
Receiver
Line Status
Overrun Error or Parity Error or Framing
Error or Break Interrupt
Reading the Line Status
Register
0
1
0
0
Second
Received
Data
Available
Receiver Data Available or Trigger Level
Reached
Reading the Receiver Buffer
Register or the FIFO Drops
below the Trigger Level
1
1
0
0
Second
Character
Timeout
Indication
No Characters Have Been Removed from
or Input to the RCVR FIFO During the
Last 4 Char. Times and There is at Least
1 Char. In it During This Time
Reading the Receiver Buffer
Register
0
0
1
0
Third
Transmitter
Holding
Register
Empty
Transmitter Holding Register Empty
Reading the IIR Register (if
Source
of
Interrupt)
or
Writing into the Transmitter
Holding Register
0
0
0
0
Fourth
MODEM
Status
Clear To Send or Data Set Ready or Ring
Indicator or Data Carrier Detect
Reading the MODEM Status
Register
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