LTC4015_15 Datasheet, PDF (68/76 Pages) Linear Technology – Multichemistry Buck Battery Charger Controller with Digital Telemetry System

LTC4015
DETAILED Register Descriptions
(ARA). See the section Programmable Alerts and Interrupt Controller for more information regarding the SMBALERT
and ARA functions.
meas_sys_valid_alert (Sub-Address 0x36, Bit 15, R/Clear)
To achieve high measurement accuracy, the measurement system in the LTC4015 has a typical warm up time of
approximately 12ms. If en_meas_sys_valid_alert=1, the meas_sys_valid_alert bit indicates that an SMBALERT has
occurred because the warm-up period has passed and the A/D measurement system results are valid. This can be
particularly useful in battery only mode for periodic sampling of the measurement system; see force_meas_sys_on
for more information.
qcount_lo_alert (Sub-Address 0x36, Bit 13, R/Clear)
If en_qcount_lo_alert=1, this bit indicates that an SMBALERT has occurred because QCOUNT has fallen below
QCOUNT_LO_ALERT_LIMIT.
qcount_hi_alert (Sub-Address 0x36, Bit 12, R/Clear)
If en_qcount_hi_alert=1, this bit indicates that an SMBALERT has occurred because QCOUNT has exceeded
QCOUNT_HI_ALERT_LIMIT.
vbat_lo_alert (Sub-Address 0x36, Bit 11, R/Clear)
If en_vbat_lo_alert =1, this bit indicates that an SMBALERT has occurred because VBAT has fallen below VBAT_
LO_ALERT_LIMIT.
vbat_hi_alert (Sub-Address 0x36, Bit 10, R/Clear)
If en_vbat_hi_alert =1, this bit indicates that an SMBALERT has occurred because VBAT has exceeded VBAT_HI_
ALERT_LIMIT.
vin_lo_alert (Sub-Address 0x36, Bit 9, R/Clear)
If en_vin_lo_alert =1, this bit indicates that an SMBALERT has occurred because VIN has fallen below VIN_LO_
ALERT_LIMIT.
vin_hi_alert (Sub-Address 0x36, Bit 8, R/Clear)
If en_vin_hi_alert =1, this bit indicates that an SMBALERT has occurred because VIN has exceeded VIN_HI_ALERT_
LIMIT.
vsys_lo_alert (Sub-Address 0x36, Bit 7, R/Clear)
If en_vsys_lo_alert =1, this bit indicates that an SMBALERT has occurred because VSYS has fallen below VSYS_
LO_ALERT_LIMIT.
vsys_hi_alert (Sub-Address 0x36, Bit 6, R/Clear)
If en_vsys_hi_alert =1, this bit indicates that an SMBALERT has occurred because VSYS has exceeded VSYS_HI_
ALERT_LIMIT.
iin_hi_alert (Sub-Address 0x36, Bit 5, R/Clear)
If en_iin_hi_alert =1, this bit indicates that an SMBALERT has occurred because IIN has exceeded IIN_HI_ALERT_LIMIT.
ibat_lo_alert (Sub-Address 0x36, Bit 4, R/Clear)
If en_ibat_lo_alert =1, this bit indicates that an SMBALERT has occurred because IBAT has fallen below IBAT_LO_
ALERT_LIMIT.
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For more information www.linear.com/LTC4015