Datasheet

LTC2977
44
2977fa
For more information www.linear.com/LTC2977
ADC MONITORING COMMANDS
READ_VIN
This command returns the most recent ADC measured value of the voltage measured at the V
IN_SNS
pin.
READ_VIN Data Contents
BIT(S) SYMBOL OPERATION
b[15:0] Read_vin[15:0] The data uses the L11 format.
Units: V
READ_VOUT
This command returns the most recent ADC measured value of the channel’s output voltage. When odd channels are
configured to measure current, the data contents use the L11 format with units in mV.
READ_VOUT Data Contents
BIT(S) SYMBOL OPERATION
b[15:0] Read_vout[15:0] The data uses the L16 format.
Units: V
READ_VOUT Data Contents—for Odd Channels Configured to Measure Current (Mfr_config_adc_hires = 1)
Bit(s) Symbol Operation
b[15:0] Read_vout[15:0]
The data uses the L11 format.
Units: mV
READ_TEMPERATURE_1
This command returns the most recent ADC measured value of junction temperature in °C as determined by the
LTC2977’s internal temperature sensor.
READ_TEMPERATURE_1 Data Contents
BIT(S) SYMBOL OPERATION
b[15:0] Read_temperature_1 [15:0] The data uses the L11 format.
Units: °C.
PMBUS_REVISION
The PMBUS_REVISION command register is read only and reports the LTC2977 compliance to the PMBus standard
revision 1.1.
PMBUS_REVISION Data Contents
BIT(S) SYMBOL OPERATION
b[7:0] PMBus_rev Reports the PMBus standard revision compliance. This is hard-coded to 0x11 for revision 1.1.
PMBus COMMAND DESCRIPTION