AS3709 datasheet(45/74 Pages) AMSCO

45 / 74 page

ams Datasheet, Confidential: 2013-Aug [1-02]

AS3709 – 45

Reg i st er Description

Figure 60:

GPIO1control Register (Address 0ch)

Addr: 0ch

GPIO1control

Bit

Bit Name

Default

Access

Bit Description

7gpio1_invert

Invert GPIO1 input/output

0 : Normal mode

1 : Invert input or output

6:3

gpio1_iosf

'b0000

Select the GPIO1 special function

.0 : Normal I/O operation

.1 : Interrupt output

.2 : VSUP_low output

.3 : GPIO interrupt input

.4 : NA

.5 : Vselect input, (apply on reg1_select and

reg2_select, if gpio2_iosf =5 then apply on

reg1_select only)

.6 : standby + Vselect + restart interrupt input

.7 : pwr_good output

.8 : NA

.9 : NA

10 : NA

11 : NA

12 : NA

13 : NA

14 : NA

15 : NA

2:0

gpio1_mode

'b011

Selects the GPIO1 mode (I, I/O, Tri, Pulls)

0 : Input

1 : Output (push and pull)

2 : IO (open drain, only NMOS is active)

3 : NA

4 : Input with pullup

5 : Input with pulldown

6 : IO (open drain (NMOS) with pullup)

7 : NA

AS3709 Datasheet(PDF) 45 Page - ams AG

AS3709 Datasheet(HTML) 45 Page - ams AG

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