ISL28025 Datasheet, PDF (22/47 Pages) Intersil Corporation – Precision Digital Power Monitor with Real Time Alerts

ISL28025
SMBCLK
SCL/SMBCLK is the serial clock input pin. The SCL/SMBCLK
input is responsible for clocking in all data to and from the
device. The input buffer on the pin is always active (not gated).
The input pin requires a pull-up resistor to I2CVCC of the device.
SMBALERT PINS (SMBALERT1, SMBALERT2)
The SMBALERT pins are output pins. The SMBALRT1 is an
open-drain output and requires a pull-up resistor to a power
supply up to 24V. The SMBALERT2 has a push/pull output stage.
The SMBALERT pins are fault acknowledgment pins. The pin can
be connected to peripheral circuitry to halt operations when a
fault event occurs.
ECLK
ECLK is the External clock pin. ECLK is an input pin. The pin
provides a connection to the system clock. The system clock is
connected to the ADC. The acquisitions rate of the ADC can be
varied through the ECLK pin. The pin functionality is set through a
control register bit.
TABLE 2. ISL28025 REGISTER DESCRIPTIONS
REGISTER
ADDRESS
(HEX)
REGISTER NAME
FUNCTION
POWER ON RESET NUMBER ACCESS
VALUE (HEX)
OF BYTES TYPE PAGE
IC DEVICE DETAILS
19 CAPABILITY
PMBus Supportability
B0
1
R
24
20 VOUT_MODE
Describes the ADC Read Back Format
40
1
R
24
99 PMBUS_REV
PMBus Revision
22
1
R
24
AD IC_DEVICE_ID
Device ID
49534C3238303235 8
R
25
AE IC_DEVICE_REV
Device Revision and Silicon Version
000002
3
R
25
GLOBAL IC CONTROLS
12 RESTORE_DEFAULT_ALL Soft Reset
N/A
0
W 25
01 OPERATION
Turns the Device On and Off
80
1
R/W 25
PRIMARY AND AUXILIARY CHANNEL CONTROLS
D2 SET_DPM_MODE
Configures the ISL28025
0A
1
R/W 25
D3 DPM_CONV_STATUS
Indicates the Status of a Conversion
N/A
1
R
26
D4 CONFIG_ICHANNEL
Shunt Inputs (Primary and Auxiliary) Configuration
0387
2
R/W 26
38 IOUT_CAL_GAIN
Calibration that Enables Primary Current Measurements
0000
2
R/W 27
D5 CONFIG_VCHANNEL
Bus Inputs (Primary and Auxiliary) Configuration
0387
2
R/W 27
D7 CONFIG_PEAK_DET
Enables Primary Channel Current Peak Detector
00
1
R/W 28
MEASUREMENT REGISTERS
D6 READ_VSHUNT_OUT
Primary Shunt Measurement Value
0000
2
R
28
8B READ_VOUT
Primary Bus Measurement Value
0000
2
R
28
8C READ_IOUT
Primary Current Measurement Value
0000
2
R
28
D8 READ_PEAK_MIN_IOUT
Primary Current Max Measurement Value
7FFF
2
R
28
D9 READ_PEAK_MAX_IOUT Primary Current Min Measurement Value
8001
2
R
28
96 READ_POUT
Primary Power Measurement Value
0000
2
R
28
E1 READ_VOUT_AUX
Auxiliary Bus Measurement Value
0000
2
R
28
8D READ_TEMPERATURE_1 Internal Temperature Measurement Value
0000
2
R
29
THRESHOLD DETECTORS
DA VOUT_OV_THRESHOLD_SET Overvoltage/Over-temperature Threshold Configuration
003F
2
R/W 29
DB VOUT_UV_THRESHOLD_SET Undervoltage Threshold Configuration
00
1
R/W 30
DC IOUT_OC_THRESHOLD_SET Overcurrent Threshold Configuration
003F
2
R/W 30
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FN8388.3
June 17, 2015