參數資料
型號: MT8LLN22NCNE
元件分類: 總線控制器
英文描述: PCI BUS CONTROLLER, PBGA316
封裝: 27 X 27 MM, PLASTIC, BGA-316
文件頁數: 115/145頁
文件大?。?/td> 2285K
代理商: MT8LLN22NCNE
Coppertail Product Specification
MT8LLN22NCNE.fm – Rev. 1, Pub. 2/02
71
2002, Micron Technology Inc.
PRELIMINARY
MT8LLN22NCNE
COPPERTAIL
DMA Channel [0-7] Base and Current Address Register
NOTE:
Typically Channel 4 is used to cascade Channels 5-7 to Channels 0-3, thus Channel 4 is used in cascade mode and
must be accessed as such.
ADDRESS: 00h
SYMBOL: DMABASE_CA
ADDRESS: 02h
ADDRESS: 04h
ADDRESS: 06h
ADDRESS: C0h
ADDRESS: C4h
ADDRESS: C8h
ADDRESS: CCh
DMA1 CHANNEL 0
DMA1 CHANNEL 1
DMA1 CHANNEL 2
DMA1 CHANNEL 3
DMA2 CHANNEL 4
DMA2 CHANNEL 5
DMA2 CHANNEL 6
DMA2 CHANNEL 7
BITS
DESCRIPTION
PROPERTIES
RESET
7:0
This 8-bit access port is used to access the 16-bit Current (Base) Address
for Channel. During WRITE operations, the value is stored in the Base
Address register and copied to the Current Address Register. During
READs, the value from the Current Address register is returned.
The address in the Current Address register will be incremented or decre-
mented after each transfer, depending on the transfer mode. When in
auto-initialization mode, the Current Address register will be reloaded
from the Base Address register after the terminal count is reached in the
Current Count register.
Reads and Writes to this register are done on a successive byte basis, with
the Clear Master Byte Pointer Flag (Register 0Ch for DMA1, Register D8h
for DMA2) in control of resetting the toggle to the least significant byte.
The low byte should be accessed first.
R/W
0
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