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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AT43USB355 датащи(PDF) 82 Page - ATMEL Corporation |
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AT43USB355 датащи(HTML) 82 Page - ATMEL Corporation |
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82 / 115 page  82 AT43USB355 2603G–USB–04/06 Function Address Register – FADDR The USB function contains an address register that contains the function address assigned by the host. This Function Address Register must be programmed by the microcontroller once it has received a SET_ADDRESS request from the host and completed the status phase of the transaction. After power up or reset, this register will contain the value of 0x00. Function Address Register – FADDR • Bit 7 – FEN: Function Enable The Function Enable bit (FEN) allows the firmware to enable or disable the function end- points. The firmware will set this bit after receipt of a reset through the hub, SetPortFea- ture[PORT_RESET]. Once this bit is set, the USB hardware passes to and from the host. When the Single Address bit is set, the condition of FEN is ignored. • Bit 6..0 – FADD6...0: Function Address[6:0] End-point Registers Hub End-point 0 Control Register – HEND-P0_CR Function End-point 0 Control Register – FEND-P0_CR • Bit 7 – EPEN: End-point Enable 0 = Disable end-point 1 = Enable end-point • Bit 6..4 – Reserved These bits are reserved in the AT43USB355 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: End-point Direction 0 = Out 1 = In • Bit 1, 0 – EPTYPE: End-point Type These bits must be programmed as 0, 0. Bit 7 6 543 2 1 0 $1FEE FEN FADD6 FADD5 FADD4 FADD3 FADD2 FADD1 FADD0 FADDR Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Initial Value 0 0 0 0 0 0 0 0 Bit 7 6 543 2 1 0 $1FE7 EPEN – – – DTGLE EPDIR EPTYPE1 EPTYPE0 HEND- P0_CR $24 ($44) EPEN – – – DTGLE EPDIR EPTYPE1 EPTYPE0 FEND-P0_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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