LSI53C825AJ LSI, LSI53C825AJ Datasheet - Page 197
LSI53C825AJ
Manufacturer Part Number
LSI53C825AJ
Description
Manufacturer
LSI
Datasheet
1.LSI53C825AJ.pdf
(306 pages)
Specifications of LSI53C825AJ
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decremented by the number of bytes transferred. In
addition, the
DMA Next Address (DNAD)
register is
incremented by the number of bytes transferred. This
process is repeated until the
DMA Byte Counter (DBC)
register is decremented to zero. At this time, the
LSI53C825A fetches the next instruction.
If bit 28 is set, indicating table indirect addressing, this
field is not used. The byte count is instead fetched from
a table pointed to by the
Data Structure Address (DSA)
register.
5.3.2 Second Dword
Start Address
[31:0]
This 32-bit field specifies the starting address of the data
to move to/from memory. This field is copied to the
DMA
Next Address (DNAD)
register. When the LSI53C825A
transfers data to or from memory, the
DMA Next Address
(DNAD)
register is incremented by the number of bytes
transferred.
When bit 29 is set, indicating indirect addressing, this
address is a pointer to an address in memory that points
to the data location. When bit 28 is set, indicating table
indirect addressing, the value in this field is an offset into
a table pointed to by the
Data Structure Address
(DSA).
The table entry contains byte count and address
information.
Block Move Instructions
5-13
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