AS3661 datasheet(55/87 Pages) AMSCO

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AS3661

Datasheet - D e t a i l e d D e s c r i p t i o n

8.10.11 GPO

AS3661 has one General Purpose Output pin (GPO). Status of the pin can be controlled with this register. Also, INT

pin can be configured to function as a GPO by setting the bit EN_GPO_INT. When INT is configured to function as a

GPO, output level is defined by the VBAT voltage.

When INT pin’s GPO function is disabled, it operates as an open drain pin. INT signal is active low, i.e. when interrupt

signal is send, the pin is pulled to GND. External pull-up resistor is needed for proper functionality.

8.10.12 VARIABLE

The variable can be sued to store data in order to control for example the data flow.

8.10.13 RESET

Table 46. GPO Register

GPO

Bit

Bit Name

Default

Access

Bit Description

INT_CONF

R/W

This bit defines the function of GPO pin. It can either be

configures as interrupt pin or as general purpose output pin.

0: INT pin is set to function as an interrupt pin.

1: INT pin is configured to function as a GPO.

GPO

R/W

This register controls the state of pin GPO.

0: GPO pin state is low.

1: GPO pin state is high. GPO pin is a digital CMOS output,

and no pulldown resistor is needed.

INT_GPO

R/W

If INT pin is defined as general purpose output (INT_CONF bit

must be set to”1”), it is possible to control the INT pin with this

bit.

0: INT pin state is low (if INT_CONF = 1).

1: INT pin state is high (if INT_CONF = 1).

Table 47. GPO Register

GPO

Bit

Bit Name

Default

Access

Bit Description

7:0

VARIABLE_D

0000 0000

R/W

These bits are used for storing a global 8–bit variable. Variable

can be used to control program flow.

Table 48. RESET Register

RESET

Bit

Bit Name

Default

Access

Bit Description

7:0

RESET

0000 0011

R/W

Writing 11111111 into this register resets the AS3661. Internal

registers are reset to the default values. Reading RESET

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