Datasheet

MCP2210
DS22288A-page 46  2011 Microchip Technology Inc.
3.2.5 GET (VM) GPIO CURRENT PIN DIRECTION
3.2.5.1 Responses
FIGURE 3-16: GET (VM) GPIO CURRENT PIN DIRECTION LOGIC FLOW
TABLE 3-42: COMMAND STRUCTURE
Byte
Index
Meaning
0 0x33 – Get (VM) GPIO Current Pin Direction
1 0x00 – Reserved
2 0x00 – Reserved
3-63 0x00 – Reserved
TABLE 3-43: RESPONSE 1 STRUCTURE
Byte
Index
Meaning
00x33 – Get (VM) GPIO Current Pin Direction – echos back the given command code
10x00 – Command Completed Successfully
2 Don’t Care
3 Don’t Care
4 GPIO Direction – 16-bit value (low byte):
• MSB – – – – – – LSB
GP7DIR GP6DIR GP5DIR GP4DIR GP3DIR GP2DIR GP1DIR GP0DIR
5 GPIO Direction – 16-bit value (high byte):
• MSB – – – – – – LSB
x x x x x x x GP8DIR
6-63 Don’t Care
Note 1: This command will only have an effect on those GPs previously configured as GPIOs.
Get RAM GPIO
Direction
Response 1
RAM GPIO
Direction
Retrieved