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AT43USB326 数据表(PDF) 55 Page - ATMEL Corporation |
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AT43USB326 数据表(HTML) 55 Page - ATMEL Corporation |
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55 / 102 page  55 AT43USB326 3313D–USB–04/06 Function Endpoint 1, 2 Control Register – FENDP1,2_CR • Bit 7 – EPEN: Endpoint Enable 0 = Disable endpoint 1 = Enable endpoint • Bit 6..4 – Reserved These bits are reserved in the AT43USB326 and will read as zero. • Bit 3 – DTGLE: Data Toggle Identifies DATA0 or DATA1 packets. This bit will automatically toggle and requires clearing by the firmware only in certain special circumstances. • Bit 2 – EPDIR: Endpoint Direction 0 = Out 1 = In • Bit 1, 0 – EPTYPE: Endpoint Type These bits program the type of endpoint. Bit 7 6 5 4 3 2 1 0 $1FE4 EPEN – – – DTGLE EPDIR EPTYPE1 EPTYPE0 FENDP1_CR $1FE3 EPEN – – – DTGLE EPDIR EPTYPE1 EPTYPE0 FENDP2_CR Read/Write R/W R R R R/W R/W R/W R/W Initial Value 0 0 0 0 0 0 0 0 Bit1 Bit0 Type 0 1 Isochronous 10 Bulk 1 1 Interrupt |
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