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7643 Datasheet(PDF) 193 Page - Renesas Technology Corp |
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7643 Datasheet(HTML) 193 Page - Renesas Technology Corp |
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193 / 424 page  Rev.2.00 Aug 28, 2006 page 72 of 202 7643 Group REJ09B0133-0200 APPLICATION 2.4 UART Fig. 2.4.36 Control procedure (2) 1 100000102 • Start processing DMAC channel 0 enabled (do not reset the source capture register) RTI DMA0M2 (Address : 4116) USBINDEX (Address : 5816) IN_CSR (Address : 5916) 000000102 000000012 000000012 DMA0 interrupt RTI USBIS1 (Address : 5216), bit2 DMA0M2 (Address : 4116) USB endpoint 1IN interrupt Interrupt occurs * When USBINDEX is set, the stored value is pushed to the temporary buffer, and after the interrupt processing is finished, pop the pushed values to USBINDEX. • End processing DMAC channel 0 disabled USB transmit (IN) : enabled Interrupt occurs Pop registers Push registers to stack Pop registers Push registers to stack |
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