Parallel Port Dma Registers - Analog Devices ADSP-21261 SHARC Hardware Reference Manual

Parallel Port Registers
For DMA transfers only, the following registers must also be initialized:
• "Parallel Port DMA Internal Word Count Register (ICPP)" on
page A-112
• "Parallel Port DMA Start Internal Index Address Register (IIPP)"
on page A-112
• "Parallel Port DMA Internal Modifier Address Register (IMPP)"
on page A-112
• "Parallel Port DMA External Word Count Register (ECPP)" on
page A-113
Additional information on Parallel Port registers can be found in
Port Registers" on page

Parallel Port DMA Registers

The following registers require initialization only when performing
DMA-driven accesses.
• DMA Start Internal Index Address (
This 19-bit register contains the offset from the DMA starting
address of 32-bit internal memory.
• DMA Internal Modifier Address (
This 16-bit register contains the internal memory DMA address
modifier.
• DMA Internal Word Count (
This 16-bit register contains the number of words in internal mem-
ory to be transferred via DMA.
• Parallel Port DMA External Word Count (
8-16
A-108.
ICPP
ADSP-2126x SHARC Processor Hardware Reference
) register
IIPP
) register
IMPP
) register
) register
ECPP
"Parallel