m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 329

• 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 3.7.4. Setting routine (3) of DMA transfer from USB OUT FIFO to serial sound interface
(b15)
b7
0
0
Completion of the DMA0 transfer and occurrence of the DMA0 interrupt request.
packet data fetch after confirming of the DMA0 interrupt request.
when DMA enable bit = “1” and the OUT_BUF_STS1 flag of endpoint 1 = “1”.
Setting CLR_OUT_BUF_RDY bit of endpoint 1 to “1” and completion of one receive
To subsequently start DMA0 transfer:
DMA request from the 2nd byte on is occurred
The DMA request of the serial sound interface 1 transmit is occurred
Disable DMA0 once and set the DMA0 related registers again.
when DMA enable bit = “1” and the OUT_BUF_STS1 flag of endpoint 1 = “1”.
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(b8)
b0
b7
DMA0 transfer from the 2nd word on
1
Continued from the previous page
DMA0 transfer of the 1st word
b0
USB Endpoint 1 OUT Control and Status register
EP1OCS [Address 02B6
CLR_OUT_BUF_RDY bit
DMA enable bit is set to "0"
1 : Data set unloaded from the OUT FIFO
by underflow of the DMA0 transfer counter.
(updates OUT_BUF_STS1 and OUT_BUF_STS0)
16
]
3. USB Applications