Datasheet
SYSTEM STATUS — I
2
C REGISTERS
TPS65820
SLVS663B – MAY 2006 – REVISED APRIL 2008 ..............................................................................................................................................................
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The I
2
C registers that have system status data are shown below. The HEX address for each register is shown by
the register name, together with the R or W functionality for the register bits. Those registers are valid, after an
initial power up, when the TPS65820 enters the normal operation mode.
SYSTEM STATUS MONITORED BY INTERRUPT CONTROLLER
B7 B6 B5 B4 B3 B2 B1 B0
PGOOD, ADDRESS=02, ALL BITS READ ONLY - POWER UP DEFAULTS SHOW SYSTEM STATUS WHEN EXITING POWER DOWN
Bit name PGOOD SM1 PGOOD SM2 PGOOD SM3 PGOOD LDO1 PGOOD LDO2 PGOOD LDO3 PGOOD LDO4 PGOOD LDO5
Function SM1 OUTPUT SM2 OUTPUT SM3 OVP LDO1 OUTPUT LDO2 OUTPUT LDO3 OUTPUT LDO4 OUTPUT LDO5 OUTPUT
STATUS STATUS STATUS STATUS STATUS STATUS STATUS STATUS
When 0 OK OK OK OK OK OK OK OK
When 1 FAULT FAULT FAULT FAULT FAULT FAULT FAULT FAULT
ADC STATUS
REGISTER ADC_READING_HI, B7: CONVERSION COMPLETE ;
INTERNAL STATUS BITS (NO I
2
C REGISTER BIT AVAILABLE: INPUT OUT OF RANGE (HI OR LO), ANLG1 PIN IMPEDANCE TO AGND2 EXCEEDS 1 m Ω .
See additional details in the Analog-to-Digital Converter section.
OTHER SYSTEM STATUS: THERMAL FAULT DETECTED
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