WM8310 datasheet(80/291 Pages) WOLFSON

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WM8310

Pre-Production

PP, May 2012, Rev 3.1

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

1:0

DC3_ON_VS

EL [1:0]

DC3_ON_VSEL[6:0] selects the DC-

DC3 output voltage from 0.85V to 3.4V

in 25mV steps.

DC3_ON_VSEL[6:2] also exist in

ICE/OTP memory, controlling the

voltage in 100mV steps.

DC3_ON_VSEL[6:0] is coded as

follows:

00h = 0.85V

01h = 0.875V

…

65h = 3.375V

66h to 7Fh = 3.4V

R16483 (4063h)

DC3 SLEEP

Control

15:13

DC3_SLP_S

LOT [2:0]

000

Same as DC-DC1

9:8

DC3_SLP_M

ODE [1:0]

Same as DC-DC1

6:0

DC3_SLP_V

SEL [6:0]

000_0000

DC-DC3 SLEEP Voltage select

0.85V to 3.4V in 25mV steps

00h = 0.85V

01h = 0.875V

…

65h = 3.375V

66h to 7Fh = 3.4V

Table 36 DC-DC (Buck) Converter Control

15.12.3 DC-DC BOOST CONVERTER CONTROL

The register controls for configuring the DC-DC4 boost converter are defined in Table 37.

Note that the DC4_RANGE control register is locked by the WM8310 User Key. This register can only

be changed by writing the appropriate code to the Security register, as described in Section 12.4 for

further details.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R16484 (4064h)

DC4 Control

15:14

DC4_ERR_A

CT [1:0]

DC-DC4 Error Action (Undervoltage)

00 = Ignore

01 = Shut down converter

10 = Shut down system (Device Reset)

11 = Reserved

Note that an Interrupt is always raised.

12:11

DC4_HWC_

SRC[1:0]

DC-DC4 Hardware Control Source

00 = Disabled

01 = Hardware Control 1

10 = Hardware Control 2

11 = Hardware Control 1 or 2

DC4_HWC_

MODE

DC-DC4 Hardware Control Operating

Mode

0 = DC-DC4 is controlled by DC4_ENA

1 = DC-DC4 is disabled when Hardware

Control Source is asserted

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