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7643 Datasheet(PDF) 262 Page - Renesas Technology Corp |
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7643 Datasheet(HTML) 262 Page - Renesas Technology Corp |
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262 / 424 page  Rev.2.00 Aug 28, 2006 page 141 of 202 7643 Group REJ09B0133-0200 APPLICATION 2.6 USB (5) Application example 5: USB function interrupt routine Outline: The following interrupts are assigned to the same vector. - USB endpoint 0 interrupt - USB endpoint x (x=1, 2) IN interrupt - USB endpoint x (x=1, 2) OUT interrupt - USB reset interrupt - USB suspend interrupt - USB resume interrupt Make all of the following settings in order to enable the interrupts. - Set USB function interrupt enable bit of interrupt control register A to “1”. - Set the bits corresponding to USB interrupt enable registers 1 and 2 to “1”. - Set the interrupt disable flag (I) to “0”. Each interrupt is determined according to the contents of USB interrupt status registers 1 and 2 in the USB function interrupt routine. When “1”, the corresponding process routine is executed. The USB reset interrupt does not have a specified enable bit and is always in the enabled state. Figure 2.6.37 shows the related register settings and Figure 2.6.38 shows a control procedure example. |
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