Texas Instruments Boomer LM49360, User Manual

Page: 53 / 137

25.0 LDO Flags and Bypass Pulse Control
TABLE 7. FLAGS 1 (0x03h)
Bits Field Description
0 LDO1_ERROR If 1 an error is present on this LDO.
1 LDO2_ERROR If 1 an error is present on this LDO.
2 LDO3_ERROR If 1 an error is present on this LDO.
3 LDO4_ERROR If 1 an error is present on this LDO.
4 LDO5_ERROR If 1 an error is present on this LDO.
5 LDO6_ERROR If 1 an error is present on this LDO.
TABLE 8. FLAGS 2 (0x04h)
Bits Field Description
0 TSDH Set if TSDH is reported from the analog. >160 degrees
1 TSDL Set if TSDL is reported from the analog. >120 degrees
2 BK1_WAKEUP
Output from BK1 - should toggle in sleep mode when the BUCK wakes up
momentarily to step back above the threshold.
3 BK2_WAKEUP
Output from BK2 - should toggle in sleep mode when the BUCK wakes up
momentarily to step back above the threshold.
4 RESERVED Reserved bit
5 UVLO_EVENT 1 = debounced UVLO event detected, 0 = UVLO not currently triggered.
6 BK1_RDY Reports if BK1 is above 90% of it's programmed output voltage.
7 BK2_RDY Reports if BK2 is above 90% of it's programmed output voltage.
TABLE 9. BYPASS (0x05h)
Bits Field Description
0 LDO1_BY
If set, the internal reference filter is bypassed. Set this bit high for 1ms after
changing VSEL if the output voltage needs to be adjusted while the LDO is
enabled. Otherwise the internal filter will slow the transition time to over a second.
This is performed automatically every time the LDO is enabled, only use the filter
bypass when adjusting VSEL when the LDO is enabled."
1 LDO2_BY
2 LDO3_BY
3 LDO4_BY
4 LDO5_BY
5 LDO6_BY
6 RSVD Reserved
7 UVLO_MASK
If set, the effects of the UVLO trigger are Ignored by the state machine. This can
be useful if the user wishes to determine the current battery voltage without
powering up an ADC. The UVLO trigger level can be increased until the I
2 C
reports a UVLO event, the level can then be changed back and the mask cleared
to return to normal operation.
TABLE 10. SWOVR 1 (0x06h)
Bits Field Description
0 LDO1_SWOVR
If set, LDO1 will enable when SWOVR is set and the device is in Standby state or
above.
1 LDO2_SWOVR
If set, LDO2 will enable when SWOVR is set and the device is in Standby state or
above.
2 LDO3_SWOVR
If set, LDO3 will enable when SWOVR is set and the device is in Standby state or
above.
3 LDO4_SWOVR
If set, LDO4 will enable when SWOVR is set and the device is in Standby state or
above.
4 LDO5_SWOVR
If set, LDO5 will enable when SWOVR is set and the device is in Standby state or
above.
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