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MCP2221 数据表(PDF) 10 Page - Microchip Technology |
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MCP2221 数据表(HTML) 10 Page - Microchip Technology |
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10 / 80 page  MCP2221 DS20005292B-page 10 2015 Microchip Technology Inc. REGISTER 1-7: USBPIDL REGISTER R/W-1 R/W-1 R/W-0 R/W-1 R/W-1 R/W-1 R/W-0 R/W-1 USBPIDL7 USBPIDL6 USBPIDL5 USBPIDL4 USBPIDL3 USBPIDL2 USBPIDL1 USBPIDL0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-0 USBPIDL<7:0>: USB PID Lower Byte (factory default: 0xDD(hex)) REGISTER 1-8: USBPIDH REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 USBPIDH7 USBPIDH6 USBPIDH5 USBPIDH4 USBPIDH3 USBPIDH2 USBPIDH1 USBPIDH0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-0 USBPIDH<7:0>: USB PID Higher Byte (factory default: 0x00(hex)) REGISTER 1-9: USBPWRATTR REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 — SELFPWR REMWKUP — — — — — bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7 Reserved: Reserved – set to ‘1’ (factory default) bit 6 SELFPWR: USB Self-Powered Attribute 1 = Chip will enumerate on the USB bus as being self-powered 0 = Chip will enumerate on the USB bus as being USB-bus powered (factory default) bit 5 REMWKUP: USB Remote Wake-Up Capability 1 = Chip will enumerate on the USB bus as being able to wake up the USB host 0 = Chip will enumerate as not being capable of remote wake-up of the USB host (factory default) bit 4-0 Reserved: Set all bits to ‘0’ (factory default) |
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