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AT43USB325 Datasheet(PDF) 72 Page - ATMEL Corporation |
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AT43USB325 Datasheet(HTML) 72 Page - ATMEL Corporation |
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72 / 109 page  72 3355C–USB–4/05 AT43USB325 8.3 Endpoint Registers 8.3.1 Hub Endpoint 0 Control Register – HENDP0_CR 8.3.2 Function Endpoint 0 Control Register – FENDP0_CR • Bit 7 – EPEN: Endpoint Enable 0 = Disable endpoint 1 = Enable endpoint • Bit 6..4 – Reserved These bits are reserved in the AT43USB325 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 must be programmed as 0, 0. Bit 7 6 543 2 1 0 $1FE7 EPEN – – – DTGLE EPDIR EPTYPE1 EPTYPE0 HENDP0_CR $24 ($44) EPEN – – – DTGLE EPDIR EPTYPE1 EPTYPE0 FENDP0_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 |
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