MCP2221 datasheet(7/80 Pages) MICROCHIP

7 / 80 page

 2015 Microchip Technology Inc.

DS20005292B-page 7

MCP2221

CHIPSETTING0 REGISTER

R/W-0

R/W-1

R/W-0

CDCSNEN LEDURXINST LEDUTXINST LEDI2CINST SSPNDINST USBCFGINST CHIPPROT1 CHIPPROT0

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

CDCSNEN: USB CDC Serial Number Enable

1 = USB CDC Serial Number is enumerated

0 = No USB CDC Serial Number enumeration (factory default)

bit 6

LEDURXINST: LED UART RX Inactive State

1 =LED UART RX is inactive high and active low (factory default)

0 =LED UART RX is inactive low and active high

bit 5

LEDUTXINST: LED UART TX Inactive State

1 =LED UART TX is inactive high and active low (factory default)

0 =LED UART TX is inactive low and active high

bit 4

LEDI2CINST: LED I2C Inactive State

1 =LED I2C is inactive high and active low (factory default)

0 =LED I2C is inactive low and active high

bit 3

SSPNDINST: SSPND Inactive State

1 = SSPND is inactive high and active low (factory default)

0 = SSPND is inactive low and active high

bit 2

USBCFGINST: USBCFG Inactive State

1 = USBCFG is inactive high and active low (factory default)

0 = USBCFG is inactive low and active high

bit 1-0

CHIPPROT<1:0>: Chip Settings Protection Level

11 = Reserved

10 = Permanently locked

01 = Password protection

00 = Chip settings unprotected (factory default)

MCP2221 数据表(PDF) 7 Page - Microchip Technology

MCP2221 数据表(HTML) 7 Page - Microchip Technology

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