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參數資料
型號: W83C553F
廠商: WINBOND ELECTRONICS CORP
元件分類: 總線控制器
英文描述: SYSTEM I/O CONTROLLER WITH PCI ARBITER
中文描述: ISA BUS CONTROLLER, PQFP208
封裝: 28 X 28 MM, PLASTIC, QFP-208
文件頁數: 41/159頁
文件大小: 3984K
代理商: W83C553F
W83C553F
3.10
The Memory Read command (C/BE[3:0]# = 6h during the address phase) is only used when operating as a bus master. It
will be used when transferring data to memory and the number of data phases is one half or less of the value programmed to
the Cache Line Size Register, or when reading less than 2 Dwords from memory. If the device needs to read more than 2
Dwords from memory, the Memory Read Line command is used. During the Memory Read cycle, the W83C553F issues a
PCI REQ# for the bus and, when PCI GNT# is asserted, reads one Dword from system memory. The bus is then released.
The data phase in Figure 3-6 takes two clock cycles, as determined by TRDY#. The W83C553F activates all byte enables,
even if some byte lanes do not contain valid data. It internally discards unnecessary bytes.
In slave mode, PCI-to-ISA memory reads are supported.
Electrical Specifications
WINBOND SYSTEMS LABORATORY
38
PCI Memory Read
Figure 3-6. Master Memory Read Timing
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相關代理商/技術參數
參數描述
W83C553FG 制造商:Winbond Electronics Corp 功能描述:
W83C553F-G 制造商:未知廠家 制造商全稱:未知廠家 功能描述:W83C553F-G Highly Integrated System I/O Controller for Power PCTM (South Bridge) QFP 208
W83C553FY-G 制造商:Nuvoton Technology Corp 功能描述:I/O Controller Phase Controller 208-Pin PQFP 制造商:Winbond Electronics 功能描述:I/O CONTROLLER 制造商:Nuvoton Technology 功能描述:I/O Controller Phase Controller 208-Pin PQFP
W83C554F 制造商:WINBOND 制造商全稱:Winbond 功能描述:SYSTEM I/O CONTROLLER WITH PCI ARBITER & UltraDMA/33 IDE Controller
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