TPS65721 datasheet(39/50 Pages) TI

39 / 50 page

TPS65720

TPS65721

www.ti.com

SLVS979 – OCTOBER 2009

CONTROL1 Register Address: 0Ah (read/write)

CONTROL1

Bit name and function

HOLD

PB_STAT

RESET_DELAY

Default

Default value loaded by:

UVLO/R

Read/write

R/W

Bit 5

HOLD (ORed with PB_IN):

0 = DCDC1 and LDO1 switched off

1 = DCDC1 and LDO1 enabled

Bit 4

PB_STAT (push-button status, after debounce):

0 = push-button not pressed

1 = push-button pressed

Bit 0

RESET_DELAY:

0 = 11ms

1 = 90ms

GPIO_SSC Register Address: 0Bh (read/write)

GPIO_SSC

Bit name and function

GPIO3

GPIO2

GPIO1

GPIO0

Default

Default value loaded by:

UVLO/R

Read/write

R/W

Bit 3

GPIO3:

0 = data in input buffer / actively pulled low when configured as an output or LED driver enabled

1 = data in input buffer / high impedance when configured as an output or LED driver

Bit 2

GPIO2:

0 = data in input buffer / actively pulled low when configured as an output or LED driver enabled

1 = data in input buffer / high impedance when configured as an output or LED driver

Bit 1

GPIO1:

0 = data in input buffer / actively pulled low when configured as an output

1 = data in input buffer / high impedance when configured as an output

Bit 0

GPIO0:

0 = data in input buffer / actively pulled low when configured as an output

1 = data in input buffer / high impedance when configured as an output

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