Datasheet

MCP2221
DS20005292A-page 56  2014 Microchip Technology Inc.
25 GP3 settings
Bit 7-5 Don’t
care
Bit 4: GPIO Output value When the GP3 is set as an output GPIO, this value will
be present at the GP3 pin.
Bit 3: GPIO Direction (Input/Output).
Works only when GP3 is set for GPIO
operation
1 GPIO Input mode
0 GPIO Output mode
Bit 2-0: GP3 Designation 111-100 Don’t care
011 Alternate function 2 (DAC2)
010 Alternate function 1 (ADC3)
001 Dedicated function operation (LED I2C)
000 GPIO operation
26-63 Don’t
care
TABLE 3-39: RESPONSE 1 STRUCTURE (CONTINUED)
Byte
Index
Function Description Value Effect