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AX88796BLF 数据表(PDF) 35 Page - ASIX Electronics Corporation |
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AX88796BLF 数据表(HTML) 35 Page - ASIX Electronics Corporation |
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35 / 82 page ![]() ASIX ELECTRONICS CORPORATION 35 AX88796BLF / AX88796BLI 5.1.1 Command Register (CR) Offset 00H (Read/Write) Field Name Description (Default = 21h) 7:6 PS1, PS0 PS1, PS0: Page Select The two bits select which register’s page is to be accessed. It will be reset to default value when set PMR to D1 to D2 sleep state. PS1 PS0 0 0 page 0 (default) 0 1 page 1 1 0 page 2 1 1 page 3 5:3 RD2, RD1, RD0 RD2, RD1, RD0: Remote DMA Command These three encoded bits control operation of the Remote DMA channel. RD2 could be set to abort any Remote DMA command in process. RD2 is reset by AX88796B when a Remote DMA has been completed. The Remote Byte Count should be cleared when a Remote DMA has been aborted. The Remote Start Address is not restored to the starting address if the Remote DMA is aborted. It will be reset to default value when set PMR to D1 to D2 sleep state. RD2 RD1 RD0 0 0 0 Not allowed 0 0 1 Remote Read 0 1 0 Remote Write 0 1 1 Not allowed 1 X X Abort / Complete Remote DMA (default) 2 TXP TXP: Transmit Packet This bit could be set to initiate transmission of a packet 1 START START: This bit is used to active AX88796B operation. This bit always read high when Host set once. It only clear by hardware or software reset. 0 STOP STOP: Stop AX88796B This bit is used to stop the AX88796B operation. It will be reset to default value when set PMR to D1 to D2 sleep state. |
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