Datasheet

LTC2945
23
2945fa
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applicaTions inForMaTion
Table 3. CONTROL Register A (00h) - Read/Write
BIT NAME OPERATION
A7 ADC Snapshot Mode Enable Enables ADC Snapshot Mode; 1 = Snapshot Mode Enabled. Only channel selected by A6 and A5 is
measured by the ADC. After the conversion, the BUSY bit is reset and the ADC is halted.
0 = Snapshot Mode Disabled (Continuous Scan Mode. Default)
A6 ADC Channel Label for Snapshot Mode ADC Channel Label for Snapshot Mode
A6 A5 ADC Channel
0 0 ΔSENSE (Default)
0 1 V
IN
1 0 ADIN
A5
A4 Test Mode Enable Test Mode Halts ADC Operation and Enables Writes to Internal ADC/LOGIC Registers;
1 = Enable Test Mode, 0 = Disable Test Mode (Default)
A3 ADC Busy in Snapshot Mode ADC Current Status; 1 = ADC Converting, 0 = ADC Conversion Completed (Default), Not Writable
A2 V
IN
Monitor Enables V
DD
or SENSE
+
Voltage Monitoring; 1 = Monitor SENSE
+
Voltage (Default),
0 = Monitor V
DD
Voltage
A1 Shutdown Enable Enables Low-I
Q
/ Shutdown Mode; 1 = Enable Shutdown, 0 = Normal Operation (Default)
A0 Multiplier Select Selects ADIN or SENSE
+
/V
DD
(depends on A2) data for digital multiplication with SENSE data;
1 = Select SENSE
+
/V
DD
(Default), 0 = Select ADIN
Table 4. ALERT Register B (01h) - Read/Write
BIT NAME OPERATION
B7 Maximum POWER Alert Enables Alert When POWER Calculation Data is > Maximum Power Threshold;
1 = Enable Alert,
0 = Disable Alert (Default)
B6 Minimum POWER Alert Enables Alert When POWER Calculation Data is < Minimum Power Threshold;
1 = Enable Alert,
0 = Disable Alert (Default)
B5
Maximum
ΔSENSE Alert Enables Alert When ADC ΔSENSE Measurement Data is > Maximum ΔSENSE Threshold;
1 = Enable Alert,
0 = Disable Alert (Default)
B4 Minimum
ΔSENSE Alert Enables Alert When ADC ΔSENSE Measurement Data is < Minimum ΔSENSE Threshold;
1 = Enable Alert,
0 = Disable Alert (Default)
B3 Maximum V
IN
Alert Enables Alert When ADC V
IN
Measurement Data is > Maximum V
IN
Threshold;
1 = Enable Alert,
0 = Disable Alert (Default)
B2 Minimum V
IN
Alert Enables Alert When ADC V
IN
Measurement Data is < Minimum V
IN
Threshold;
1 = Enable Alert,
0 = Disable Alert (Default)
B1 Maximum ADIN Alert Enables Alert When ADC ADIN Measurement Data is > Maximum ADIN Threshold;
1 = Enable Alert,
0 = Disable Alert (Default)
B0 Minimum ADIN Alert Enables Alert When ADC ADIN Measurement Data is < Minimum ADIN Threshold;
1 = Enable Alert,
0 = Disable Alert (Default)