WM8325 datasheet(87/254 Pages) WOLFSON

87 / 254 page

Production Data

WM8325

PD, February 2012, Rev 4.0

15.11.5 MONITORING AND FAULT REPORTING

The overvoltage, undervoltage and high current status registers are defined in Table 38.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R16468 (4054h)

DCDC UV

Status

DC2_OV_ST

DC-DC2 Overvoltage Status

0 = Normal

1 = Overvoltage

DC1_OV_ST

DC-DC1 Overvoltage Status

0 = Normal

1 = Overvoltage

DC2_HC_ST

DC-DC2 High Current Status

0 = Normal

1 = High Current

DC1_HC_ST

DC-DC1 High Current Status

0 = Normal

1 = High Current

3:0

DCm_UV_S

DC-DCm Undervoltage Status

0 = Normal

1 = Undervoltage

R16469 (4055h)

LDO UV Status

INTLDO_UV

_STS

LDO13 (Internal LDO) Undervoltage

Status

0 = Normal

1 = Undervoltage

9:0

LDOn_UV_S

LDOn Undervoltage Status

0 = Normal

1 = Undervoltage

Notes:

is a number between 1 and 10 that identifies the individual LDO Regulator (LDO1 - 10).

is a number between 1 and 4 that identifies the individual DC-DC Converter (DC-DC1 - 4).

Table 38 DC Converter and LDO Regulator Status

15.12 POWER MANAGEMENT INTERRUPTS

Undervoltage monitoring is provided on all DC-DC Converters and LDO Regulators, as described in

Section 15.10. The associated interrupt flags indicate an undervoltage condition in each individual

DC-DC Converter or LDO Regulator. Each of these secondary interrupts triggers a primary

Undervoltage Interrupt, UV_INT (see Section 23). This can be masked by setting the mask bit(s) as

described in Table 39.

Current monitoring is provided on DC-DC1 and DC-DC2, as described in Section 15.10. The interrupt

flags HC_DC1_EINT and HC_DC2_EINT indicate a high current condition in DC-DC1 and DC-DC2

respectively. Each of these secondary interrupts triggers a primary High Current Interrupt, HC_INT

(see Section 23). This can be masked by setting the mask bit(s) as described in Table 39.

The high current thresholds are programmable; these are set by DC1_HC_THR and DC2_HC_THR

for DC-DC1 and DC-DC2 respectively. See Section 15.11.2 for details of these register fields. Note

that these functions are for current monitoring; they do not equate to the DC-DC Converter maximum

current limit.

WM8325 Datasheet(PDF) 87 Page - Wolfson Microelectronics plc

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