DLPC3470 datasheet(10/70 Pages) TI1

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DLPC3470

DLPS110 – APRIL 2018

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Product Folder Links: DLPC3470

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(1)

GPIO signals must be configured through software for input, output, bidirectional, or open-drain. Some GPIO have one or more

alternative use modes, which are also software configurable. The reset default for all GPIO is as an input signal. An external pullup is

required for each signal configured as open-drain.

(2)

DLPC3470 controller general purpose I/O. These GPIO are software configurable.

Pin Functions – GPIO Peripheral Interface(1)

I/O

DESCRIPTION(2)

NAME

NUMBER

GPIO_19

M15

General purpose I/O 19 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

MTR_SENSE, Motor Sense (Input): For Focus Motor control applications, this GPIO must be

configured as an input to the DLPC3470 controller fed from the focus motor position sensor.

KEYPAD_4 (input): keypad applications

GPIO_18

M14

General purpose I/O 18 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_3 (input): keypad applications

GPIO_17

L15

General purpose I/O 17 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_2 (input): keypad applications

GPIO_16

L14

General purpose I/O 16 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_1 (input): keypad applications

GPIO_15

K15

General purpose I/O 15 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_0 (input): keypad applications

GPIO_14

K14

General purpose I/O 14 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

GPIO_13

J15

General purpose I/O 13 (hysteresis buffer). Options:

CAL_PWR (output): Intended to feed the calibration control of the successive approximation ADC

light sensor.

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

GPIO_12

J14

General purpose I/O 12 (hysteresis buffer). Options:

(Output) power enable control for LABB light sensor.

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

GPIO_11

H15

General purpose I/O 11 (hysteresis buffer). Options:

(Output): thermistor power enable.

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

GPIO_10

H14

General Purpose I/O 10 (hysteresis buffer). Options:

RC_CHARGE (output): Intended to feed the RC charge circuit of the successive approximation ADC

used to control the light sensor comparator.

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

GPIO_09

G15

General purpose I/O 09 (hysteresis buffer). Options:

LS_PWR (active high output): Intended to feed the power control signal of the successive

approximation ADC light sensor.

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

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