DA6021 datasheet(175/225 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

175 of 224

www.dialog-semiconductor.com

PMICTHERMAL3

Address

0xB2

Page 1

Read/Write

Reset Value 0x00

MSB

LSB

R/W

ALERT1LSB

ALERT1LSB [7:0]

0..255

PMICTHERMCRIT

Address

0xB3

Page 1

Read/Write

Reset Value 0x00

MSB

LSB

R/W

TCRIT

TCRIT [8:1]

0..255

Note that TCRIT[9] and TCRIT[0] are always 0

When in register TS_ENABLE the corresponding thermistor bit as well as the corresponding A0PEN bit

asserted, any crossover of ALERT0 will assert PROCHOT_B. Any cross down below ALERT0_HYST must

remove the related warning and de-assert PROCHOT_B if there are no other warnings.

A0_ST and A1_ST are always set if:



temp > ALERTX or



temp < (ALERTX

– ALERTX_HYST) with X=0 or 1.

Setting A0_ST or A1_ST will generate an interrupt for the processor

Alert warnings concurrently assert the PROCHOT_B. The processor must investigate this and act to optimize

power consumption to control the temperature until the sensed voltage is at the correct level. Assertion should

hold until all the warnings are cleared.

Critical Thermal Events

16.4

Unlike alerts, which are pre-emptive warnin

gs, ―critical thermal events occur when the system or battery

pack(s) or DA6021 die temperature exceed design thresholds, immediate action must be taken to resolve this

thermal issue.

System Temperature

16.4.1

The system temperature exceeds the critical thermal limit set for the SYSTEMP0-2, and critical temperature shut

down is enabled (CRITEN=1), the following actions are taken:



If enabled, DA6021 forces the immediate shutdown of all VR rails currently in regulation, returning

DA6021 to the SOC G3 state without depending on the assertion of SLP_S*_B signals from the

SOC.



DA6021 sets the RSYSTEMP bit in the RESETSRC0 register to indicate the reason for shutdown.



DA6021 sets SYS*CRIT in THRMIRQ1 to interrupt the SOC. However, the SOC may not have time

to respond before the system is shut down.

DA6021 Datasheet(PDF) 175 Page - Renesas Technology Corp

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