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| 型号： | MSM82C59A-2 |
| 厂商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Programmable Universal Timers(可编程中断控制器,单片8中断控制,可级联成64中断控制) |
| 中文描述： | 可编程通用定时器（可编程中断控制器，单片8中断控制，可级联成64中断控制） |
| 文件页数： | 17/28页 |
| 文件大小： | 187K |
| 代理商： | MSM82C59A-2 |
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Semiconductor
MSM82C59A-2RS/GS/JS
(6) Operation Command Words (OCW1 thru OCW3)
When Initialization Command Words (ICWs) are programmed in the MSM82C59A-2, the
interrupt input line is ready to receive interrupt requests. The Operation Command Words
(OCWs) enable the MSM82C59A-2 to be operated in various modes while the device is in
operation.
(i)
Operation Command Word 1 (OCW1)
OCW1 sets and resets the mask bits of the Interrupt Mask Register (IMR). M0 thru M7
represent 8 mask bits. The channel is masked when M = 1, but is enabled when M = 0.
(ii) Operation Command Word 2 (OCW2)
R, SL, EOI: The Priority Rotation and End of Interrupt mode plus combinations of the
two are controlled by combinations of these 3 bits. These combinations are
listed in the operation command word format table.
L2, L1, L0: These bits indicate the specified interrupt level when SL = 1.
(iii) Operation Command Word 3 (OCW3)
ESMM: This enables the Special Mask Mode. The special mask mode can be set and
reset by the SMM bit when ESMM = 1. The SMM bit is ignored when ESMM
= 0.
SMM:
(Special Mask Mode)
The MSM82C59A-2 is set to Special Mask Mode when ESMM = 1 and SMM =
1, and is returned to normal mask mode when ESMM = 1 and SMM = 0. SMM
is ignored when ESMM = 0.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MSM82C59A-2GS | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:PROGRAMMABLE INTERRUPT CONTROLLER |
| MSM82C59A-2GS-K | 制造商:ROHM Semiconductor 功能描述: |
| MSM82C59A-2JS | 制造商:ROHM Semiconductor 功能描述: |
| MSM82C59A-2JSDR1 | 制造商:ROHM Semiconductor 功能描述: |
| MSM82C59A-2JS-DR1 | 制造商:ROHM Semiconductor 功能描述:PROGRAMMABLE INTERRUPT CONTROLLER |
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