參數(shù)資料
型號: W83C554F
英文描述: W83C554F Highly Integrated System I/O Controller for Power PC TM (South Bridge) & UltraDMA/33 IDE Controller QFP 208
中文描述: W83C554F高度集成的系統(tǒng)的I / O控制器的Power PC商標(南橋)
文件頁數(shù): 100/159頁
文件大?。?/td> 3991K
代理商: W83C554F
W83C553F
Electrical Specifications
WINBOND SYSTEMS LABORATORY
97
Initialization Command Word 2 Register
Function
:
The Initialization Command Word 2 (ICW2) Register is used to initialize the interrupt controller with the
five most significant bits of the interrupt vector address. The value programmed into bits [7:3] is used by
the host CPU to define the base address in the interrupt vector table for the interrupt routines associated
with each IRQ on the controller.
Type
:
Write Only
Bit Description
:
Bits [7:3]:
TA[7:3]. Interrupt Vector Base Address. These bits define the base address in the interrupt
vector table for the interrupt routines associated with each interrupt request level input. For
Interrupt Controller #1, a typical value is "00001;" for Interrupt Controller #2, a typical value is
"10000."
Bits [2:0]:
Reserved. Interrupt Request Level. When writing ICW2, these bits should all be "0." During
an interrupt acknowledge cycle, these bits are coded with a simple binary value determining
which IRQ is enable.
相關PDF資料
PDF描述
W83L519D Peripheral Miscellaneous
W86C451 UART
W86C452 UART
W86F3448D LC86F3548A
W86F3448M LC86F3548A
相關代理商/技術(shù)參數(shù)
參數(shù)描述
W83C554FY 制造商:Nuvoton Technology Corp 功能描述:I/O Controller Phase Controller 制造商:Nuvoton Technology 功能描述:I/O Controller Phase Controller
W83E14 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:SYSMAC-C20 MANUAL DX CODE ZA
W83L177R 制造商:WINBOND 制造商全稱:Winbond 功能描述:100MHZ 2-DIMM SDRAM BUFFER FOR NOTEBOOK
W83L197R-16 制造商:WINBOND 制造商全稱:Winbond 功能描述:2-CHIP 100MHZ CLOCK FOR BX NOTEBOOK
W83L351 制造商:WINBOND 制造商全稱:Winbond 功能描述:ExpressCard⑩ Power Interface Switch