MM912F634CV2AP datasheet(64/335 Pages) FREESCALE

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Functional Description and Application Information

Power Supply

MM912F634

Freescale Semiconductor

4.4.4.2

Voltage Status Register (VSR)

Table 76. Voltage Status Register (VSR)

Offset(62) 0x05

Access: User read

543

210

VROVC

HTC

HVC

LVC

LBC

Reset

000

Note:

62. Offset related to 0x0200 for blocking access and 0x300 for non blocking access within the global address space.

Table 77. VSR - Register Field Descriptions

Field

Description

VROVC

Voltage Regulator Over-voltage Condition - This status bit indicates an over-voltage warning is present for at least one of the

main voltage regulators (VDD or VDDX). Reading the register will clear the VROVI flag if present. See Section 4.6, “Interrupts"

for details. Note: This feature requires the trimming of Section 4.25.1.2.3, “Trimming Register 2 (CTR2)" to be done to be

effective. Untrimmed devices may issue the VROVC condition including the LS turn off at normal operation!

0 - No Voltage Regulator Over-voltage Condition present.

1 - Voltage Regulator Over-voltage Condition present.

HTC

High Temperature Condition - This status bit indicates a high temperature warning is present for the Voltage regulators

(VDD/VDDX). Reading the register will clear the HTI flag if present. See Section 4.6, “Interrupts" for details.

0 - No High Temperature Condition present.

1 - High Temperature Condition present.

HVC

High Voltage Condition - This status bit indicates a high voltage warning for VS2 is present. Reading the register will clear the

HVI flag if present. See Section 4.6, “Interrupts" for details.

0 - No High Voltage Condition present.

1 - High Voltage Condition present.

LVC

Low Voltage Condition - This status bit indicates a low voltage warning for VS1 is present. Reading the register will clear the

LVI flag if present. See Section 4.6, “Interrupts" for details.

0 - No Low Voltage Condition present.

1 - Low Voltage Condition present.

LBC

Low Battery Condition - This status bit indicates a low voltage warning for VSENSE is present. Reading the register will clear

the LBI flag if present. See Section 4.6, “Interrupts" for details.

0 - No Low Battery Condition present.

1 - Low Battery Condition present.

MM912F634CV2AP Datasheet(PDF) 64 Page - Freescale Semiconductor, Inc

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