Linear Technology LTC3350, Manual

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LTC3350
37
3350fc
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regisTer DescripTions
mon_status (0x1C)
Monitor Status: This register provides real time status information about the state of the monitoring system. Each bit is active high.
BIT(S) BIT NAME DESCRIPTION
0 mon_capesr_active Capacitance/ESR measurement is in progress
1 mon_capesr_scheduled Waiting programmed time to begin a capacitance/ESR measurement
2 mon_capesr_pending Waiting for satisfactory conditions to begin a capacitance/ESR measurement
3 mon_cap_done Capacitance measurement has completed
4 mon_esr_done ESR Measurement has completed
5 mon_cap_failed The last attempted capacitance measurement was unable to complete
6 mon_esr_failed The last attempted ESR measurement was unable to complete
7 – Reserved
8 mon_power_failed This bit is set when V
IN
falls below the PFI threshold or the charger is unable to
charge. It is cleared only when power returns and the charger is able to charge.
9 mon_power_returned This bit is set when the input is above the PFI threshold and the charger is able to
charge. It is cleared only when mon_power_failed is set.
15:10 – Reserved
alarm_reg (0x1D)
Alarms Register: A one in any bit in the register indicates its respective alarm has triggered. All bits are active high.
BIT(S) BIT NAME DESCRIPTION
0 alarm_cap_uv Capacitor undervoltage alarm
1 alarm_cap_ov Capacitor overvoltage alarm
2 alarm_gpi_uv GPI undervoltage alarm
3 alarm_gpi_ov GPI overvoltage alarm
4 alarm_vin_uv V
IN
undervoltage alarm
5 alarm_vin_ov V
IN
overvoltage alarm
6 alarm_vcap_uv V
CAP
undervoltage alarm
7 alarm_vcap_ov V
CAP
overvoltage alarm
8 alarm_vout_uv V
OUT
undervoltage alarm
9 alarm_vout_ov V
OUT
overvoltage alarm
10 alarm_iin_oc Input overcurrent alarm
11 alarm_ichg_uc Charge undercurrent alarm
12 alarm_dtemp_cold Die temperature cold alarm
13 alarm_dtemp_hot Die temperature hot alarm
14 alarm_esr_hi ESR high alarm
15 alarm_cap_lo Capacitance low alarm