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SN250 Datasheet(PDF) 83 Page - STMicroelectronics |
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SN250 Datasheet(HTML) 83 Page - STMicroelectronics |
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83 / 130 page  SN250 Functional description—application modules 83/130 SC2_RXCNTB [0x4412] SC2_TXCNT [0x4414] SC2_RXBEGA [0x4400] 15 0-R 14 0-R 13 0-R 12 0-R 11 0-R 10 0-R 9 0-R 8 0-R 0 0 0 SC2_RXCNTB SC2_RXCNTB 0-R 7 0-R 6 0-R 5 0-R 4 0-R 3 0-R 2 0-R 1 0-R 0 SC2_RXCNTB [12:0] A byte offset (from 0) which points to the location in DMA receive buffer B where the next byte will be placed. When the buffer fills and subsequently unloads, this register wraps around and holds the value zero (pointing back to the first location in the buffer). 15 0-R 14 0-R 13 0-R 12 0-R 11 0-R 10 0-R 9 0-R 8 0-R 0 0 0 SC2_TXCNT SC2_TXCNT 0-R 7 0-R 6 0-R 5 0-R 4 0-R 3 0-R 2 0-R 1 0-R 0 SC2_TXCNT [12:0] A byte offset (from 0) which points to the location in the active (loaded) DMA transmit buffer where the next byte will be placed. When the buffer fills and subsequently unloads, this register wraps around and holds the value zero (pointing back to the first location in the buffer). 15 0-R 14 1-R 13 1-R 12 0-RW 11 0-RW 10 0-RW 9 0-RW 8 0-RW 0 1 1 SC2_RXBEGA SC2_RXBEGA 0-RW 7 0-RW 6 0-RW 5 0-RW 4 0-RW 3 0-RW 2 0-RW 1 0-RW 0 SC2_RXBEGA [12:0] DMA Start address (byte aligned) for receive buffer A. |
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