R1610C RDC Semiconductor, R1610C Datasheet - Page 63

• Manufacturer Part Number: R1610C
• Description: High Performance 16 Bits MCU Integrated One 10/100M Mac Controller - 3.3V Operating Voltage/2.5V Core Voltage
• Manufacturer: RDC Semiconductor

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Control Register must be set to 0 for byte transfer. The map address of the Transmit Data Register is written to the
DMA Destination Address Register and the memory or I/O address is written to the DMA Source Address Register,
when the data are transmitted. The map address of the Receive Data Register is written to the DMA Source
Address Register and the memory or I/O address is written to the DMA Destination Address Register, when the
data are received.
When a DMA channel is in use by a serial port, the corresponding external DMA request signal is deactivated. For
DMA to the serial port, the DMA channel should be configured as being destination-synchronized. For DMA from
the serial port, the DMA channel should be configured as source-synchronized.
Data Sheet
Final Version 1.5
October 27, 2003
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14.3
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The serial port data can be DMA transfer to or from memory or I/O space. And the B_n/W bit of the DMA
The software is programmed through the Serial Port Control Register to perform the serial port/ DMA transfer.
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Serial Port/DMA Transfer
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Fast Ethernet RISC Processor
R1610C
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