m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 323

• 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 3.6.3. Setting routine (2) of DMA transfer from RAM to UART using SFR snooping function
b15
b15
b7
b7
1
b7
1
1
Clear CRC data register
Set Software DMA request bit to “1” in the status that DMA enable bit is “1”
Setting CRC mode register
Setting CRC snoop address register
Enable DMA0
0
00
16
1
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0
b8 b7
b8 b7
b0
b0
b0
0
DMA0 cause select register
DM0SL [Address 03B8
CRC mode register
CRCMR [Address 03B6
DMA0 control register
DM0CON [Address 002C
036A
Continued from the previous page
1st byte DMA transfer
Software DMA request bit
1 : Occurred
DMA request bit
DMA enable bit
16
CRC mode polynomial selection bit
CRC mode selection bit 0
00
0 : DMA not requested
1 : Enabled
1 : MSB first mode
Continued to the next page
0 : CRC-CCITT
16
SFR snoop address bit
CRCSAR Read
CRCSAR Write
Set address: 036A
0 : Disabled
1 : Enabled
b0
b0
16
]
16
CRC data register
CRCD [Address 03BD
CRC snoop address register
CRCSRA [Address 03B5
]
16
]
16
Transfer to CRC input register at the same
time by SFR snoop function
(UART1 transmit buffer register)
3. CRC Snoop Function Applications
16
, 03BC
16
, 03B4
16
]
16
]