DA6021 datasheet(147/225 Pages) RENESAS

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DA6021

HIGHLY INTEGRATED POWER MANAGEMENT IC FOR

INTEL® ATOM™ Z3000 PROCESSOR

Company Confidential

Data Sheet

Version 3.A - Final

31-Jan-14

147 of 224

www.dialog-semiconductor.com

CH5-7: System Temperature Thermistor

15.3.9

Each of the system temperature thermistors SYS0, SYS1 and SYS2 has its own alert event register

ESYSxALRT that flag an interrupt when the according temperature threshold SYSxALRT is exceeded. In case

temperature exceeds one of the thresholds, the status register SSYSxALRT and the event register ESYSxALRT

are set and an Interrupt is generated to the SOC. A hysteresis is implemented for this event, so the status is

cleared and another event is generated when the temperature falls below the SYSxALRT + SYSxHYS threshold.

Note, high temperature means low ADC result values.

CH8-12: VR Current Measurement

15.3.10

DA6021 is capable to monitor the output current of the VCC, VNN, V1P0A, V1P05S and VDDQ buck regulator.

The results are stored in the corresponding result registers.

Usually the current of the buck regulators is monitored when the system is in S0 state. The current is averaged

and measured per default every 1ms. The control register described below provides flexibility for user

enable/disable and program the average time constant.

VRIMONCTL

Address

0x71

Page 1

Read

Reset Value

0x03

MSB

LSB

reserved

VRIFRQS

VRIFRQA

VRIEN

Enable ADC based current monitor timer

VRIFRQA

Specifies the time constant at which the current measurements are

initiated while system is in S0 mode

0.5ms

1ms

2ms

4ms

VRIFRQS

Specifies the time constant at which system temperature

measurements are initiated while system is in S0iX mode

Disable

1ms

4ms

8ms

CH8: VSYS Voltage Measurements

15.3.11

The System Voltage measure requires the preamplifier to be turned on with a gain of 0.8

System Voltages is internally measured every 128us in active states S0.

DA6021 Datasheet(PDF) 147 Page - Renesas Technology Corp

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