DA6021 datasheet(166/225 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

166 of 224

www.dialog-semiconductor.com

PROCHOT_BEH

Address

0xBA

Page 1

Read/Write

Reset Value

0x00

MSB

LSB

R/W

reserved

PROCHOT_B

_ST

PROCHOT_B

_VWA_EN

PROCHOT_B

_VWB_EN

PROCHOT_B_VWB_EN

BCU will not enable PROCHOT_B based on VWARNB

Assert PROCHOT_B at VWARNB

PROCHOT_B_VWA_EN

BCU will not enable PROCHOT_B based on VWARNB

Assert PROCHOT_B at VWARNB

PROCHOT_B_ST

0 = low status indication

1= high status indication

Temperature Monitoring via ADC

16.3.5

DA6021 has the capability to monitor six miscellaneous temperatures and stores the measurement results in the

corresponding registers



SYSTHERM0:

System temperature 0



SYSTHERM1:

System temperature 1



SYSTHERM2:

System temperature 2



PMICTEMP:

DA6021 on-die temperature



BPTHERM0:

Primary battery temperature



BPTHERM1:

Secondary battery temperature

The external temperatures are sensed using external precision NTC thermistors. PMICTEMP, the internal die

temperature, is sensed using an internal silicon temperature thermometer circuit. All six temperatures are

sampled by the 10-bit GPADC (ADC). Voltages across the thermistors are converted by the ADC channels.

That means a higher temperature at a thermistor will give a lower voltage at the input of ADC channel thus

produces a smaller digital code at the ADC result registers. The SVTM will read always the measurement result

for the system, platform and PMIC temperature and will react according to some programmable thresholds.

The THRMMONCTL0-1 registers are the master control for the timer-based thermal monitoring state machine.

They are defined in the table below.

THRMMONCTL0

Address

0x8E

Page 1

Read/Write

Reset Value 0x15

MSB

LSB

R/W

reserved

SYSFRQS

BATFRQS

SYSFRQA

BATFRQA

THRMEN

DA6021 shuts down if die temperature exceeds critical limit

Enables ADC based automatic thermal monitoring timer for system,

battery and DA6021 die

BATFRQA[1:0]

Specifies the frequency at which battery temperature measurements

are initiated while system is in S0 mode

Disable

32s

DA6021 Datasheet(PDF) 166 Page - Renesas Technology Corp

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