STPMIC25 datasheet(97/145 Pages) STMICROELECTRONICS

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6.5.8

LDOx PWRCTRL control register (LDOx_PWRCTRL_CR) (x = 1 to 8)

Table 61. LDOx_PWRCTRL_CR

PWRCTRL_DLY_H[1:0]

PWRCTRL_DLY_L[1:0]

PWRCTRL_SEL[1:0]

PWRCTRL_RST

PWRCTRL_EN

R/W

•

Address: 0x4E/0x51/0x54/0x57/0x5A/0x5D/0x60/0x63

•

Default: 0x00

•

Description: LDO1 to LDO8 PWRCTRL control register.

This register is initialized to the default value in the CHECK&LOAD state. The user can write to these registers to

allocate a PWRCTRL signal for controlling the LDOx (see Section 5.4.6).

[7:6]

PWRCTRL_DLY_H[1:0]: LDOx control/reset source shift delay from low to High level

00: no delay

01: 1.5 ms delay

10: 3 ms delay

11: 6 ms delay

[5:4]

PWRCTRL_DLY_L[1:0]: LDOx control/reset source shift delay from high to Low level

00: no delay

01: 1.5 ms delay

10: 3 ms delay

11: 6 ms delay

[3:2]

PWRCTRL_SEL[1:0]: LDOx control/reset PWRCTRL source selection.

00: No control source

01: PWRCTRL1 control source

10: PWRCTRL2 control source

11: PWRCTRL3 control source

[1]

PWRCTRL_RST: LDOx independent reset source enable

0: no effect

1: reset enable (when the selected PWRCTRL source is active, LDOx is disabled and LDOx control registers are reset

to the default value. When the selected PWRCTRL source is inactive, LDOx operates according to LDOx_MAIN_CR.

See Table 27).

[0]

PWRCTRL_EN: LDOx control source enable

0: disable (LDOx operates according to LDOx_MAIN_CR)

1: enable (LDOx operates according to LDOx_MAIN_CR or LDOx_ALT_CR depending on the PWRCTRL selected

source. See Table 27).

STPMIC25

DS14278 - Rev 3

page 97/145

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