m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 324

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 3.6.4. Setting routine (3) of DMA transfer from RAM to UART using SFR snooping function
Transfer of the 16-bit calculation result which is stored in CRC data register
To subsequently start the DMA0 transfer:
when DMA enable bit = “1” and the UART1 is transmit request state.
The DMA transfer request from the 2nd byte on is occurred
Completion of the DMA0 transfer and occurrence of the DMA0 interrupt request.
to UART1 transmit buffer register every 1 byte.
Disable the DMA0 once and set the DMA0 related registers once again.
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DMA0 transfer from the 2nd byte on
Continued from the previous page
DMA enable bit is set to “0”
by underflow of the DMA0 transfer counter.
Transfer of the data to
CRC input register by
the SFR snoop function.
3. CRC Snoop Function Applications