參數(shù)資料
型號： XR82C68444
廠商： Exar Corporation
英文描述： CMOS QUAD CHANNEL UART (QUART)
中文描述： 的CMOS四通道UART（夸脫）
文件頁數(shù)： 45/107頁
文件大?。?/td> 2244K
代理商： XR82C68444
XR82C684
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Figure 19.
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Figure 19. A Diagram of Numerous QUARTs configured in an Interrupt Daisy Chain (for Z-Mode Operation)
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IEI - Interrupt Enable Input
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Note:
those interrupts which have been masked out by
the IMR are still disabled. However, if this input is at a
logic “l(fā)ow”, then all interrupts (whether masked or
unmasked) are disabled. Hence, IEI can act to globally
disable all QUART interrupt requests.
IEO - Interrupt Enable Output
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Note:
Once the IEO pin has toggled “l(fā)ow”, and the CPU
has acknowledged the interrupt request and has
completed the interrupt service routine, the IEO pin will
remain “l(fā)ow” until the user invokes the “RESET IUS”
command (see Table 2).
Therefore, if the QUART is
going to operate in the Z-Mode, the user must include the
“RESET IUS” Command at the very end of the QUART
interrupt service routine.
System Level Application of the IEI and IEO pins
Figure 19
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相關(guān)PDF資料
PDF描述
XR82C684CJ CMOS QUAD CHANNEL UART (QUART)
XR82C684J CMOS QUAD CHANNEL UART (QUART)
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XR88C681J CMOS DUAL CHANNEL UART (DUART)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR82C684CJ 制造商:EXAR 制造商全稱:EXAR 功能描述:CMOS QUAD CHANNEL UART (QUART)
XR82C684CJ/44 制造商:EXAR 制造商全稱:EXAR 功能描述:CMOS QUAD CHANNEL UART (QUART)
XR82C684CJ/44-0A-EB 功能描述:界面開發(fā)工具 Supports 82C684 44ld PLCC, ISA Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
XR82C684CJ/44-F 功能描述:UART 接口集成電路 0.5V-2V UART temp 0C to 70C RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR82C684CJ-0A-EVB 功能描述:界面開發(fā)工具 Supports 82C684 68ld PLCC, ISA Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
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