MCP2221 datasheet(10/80 Pages) MICROCHIP

10 / 80 page

MCP2221

DS20005292B-page 10

 2015 Microchip Technology Inc.

USBPIDL REGISTER

R/W-1

R/W-0

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))

USBPIDH REGISTER

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))

USBPWRATTR REGISTER

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)

MCP2221 Datasheet(PDF) 10 Page - Microchip Technology

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