EMC2103 datasheet(68/85 Pages) MICROCHIP

68 / 85 page

RPM-Based Fan Controller with Hardware Thermal Shutdown

Datasheet

DS0005250A-page 68

 2013 Microchip Technology Inc.

6.34

GPIO Direction Register (EMC2103-2 and EMC2103-4 Only)

The GPIO Direction Register controls the direction of GPIOs 1 and 2.

Bit 1 - GPIO2_DIR - Determines the direction of GPIO2.



‘0’ (default) - GPIO2 is configured as an input.



‘1’ - GPIO1 is configured as an output.

Bit 0 - GPIO2_DIR - Determines the direction of GPIO1.



‘0’ (default) - GPIO1 is configured as an input.



‘1’ - GPIO1 is configured as an output.

6.35

GPIO Output Configuration Register (EMC2103-2 and

EMC2103-4 Only)

The GPIO Output Configuration Register controls the output pin type of each GPIO pin.

Bit 1 - GPIO2_OT - Determines the output type for GPIO2.



‘0’ (default) - GPIO2 is configured as an open drain output (if enabled as an output).



‘1’ - GPIO2 is configured as a push-pull output (if enabled as an output).

Bit 0 - GPIO1_OT - Determines the output type for GPIO1.



‘0’ (default) - GPIO1 is configured as an open drain output (if enabled as an output).



‘1’ - GPIO1 is configured as a push-pull output (if enabled as an output).

6.36

GPIO Input Register (EMC2103-2 and EMC2103-4 Only)

Table 6.51 GPIO Direction Register

ADDR

R/W

DEFAULT

E1h

R/W

GPIO

Direction 1

GPIO

2_DIR

GPIO

1_DIR

00h

Table 6.52 GPIO Output Configuration Register

ADDR

R/W

DEFAULT

R/W

GPIO

Output

Config

GPIO

2_OT

GPIO

1_OT

00h

Table 6.53 GPIO Input Register

ADDR

R/W

DEFAULT

E3h

GPIO Input

GPIO

2_IN

GPIO

1_IN

00h

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