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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8SX/1663 数据表(PDF) 822 Page - Renesas Technology Corp |
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H8SX/1663 数据表(HTML) 822 Page - Renesas Technology Corp |
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822 / 1158 page  Section 16 USB Function Module (USB) Rev.1.00 Jun. 07, 2006 Page 770 of 1102 REJ09B0294-0100 16.3.19 Data Status Register (DASTS) DASTS indicates whether the transmit FIFO buffers contain valid data. A bit is set when data is written to the corresponding FIFO buffer and the packet enable state is set, and cleared when all data has been transmitted to the host. Bit Bit Name Initial Value R/W 7 0 R 6 0 R 5 EP3 DE 0 R 4 EP2 DE 0 R 3 0 R 2 0 R 1 0 R 0 EP0i DE 0 R Bit Bit Name Initial Value R/W Description 7 6 0 0 R R Reserved These bits are always read as 0. The write value should always be 0. 5 EP3 DE 0 R EP3 Data Present This bit is set when the endpoint 3 FIFO buffer contains valid data. 4 EP2 DE 0 R EP2 Data Present This bit is set when the endpoint 2 FIFO buffer contains valid data. 3 2 1 0 0 0 R R R Reserved These bits are always read as 0. 0 EP0i DE 0 R EP0i Data Present This bit is set when the endpoint 0 FIFO buffer contains valid data. |
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