ISL6592 Datasheet, PDF (19/21 Pages) Intersil Corporation – 6-Phase Digital Multiphase Controller

ISL6592
I²C Read and Write Protocol
Data write
S slave_addr + W A reg_addr MSB A reg_addr LSB
Set current address
S slave_addr + W A reg_addr MSB A reg_addr LSB
Read from current address
S slave_addr + R A reg_addr MSB A reg_addr LSB
A reg_data MSB A
AP
NP
reg_data LSB
AP
Driven by master
Driven by slave
Key Registers
Table 5 below provides brief descriptions of several key
configuration (R/W - read/write) and status (RO - read only)
registers available on the ISL6592 Digital Multiphase
Controllers.
TABLE 5. KEY REGISTERS
REGISTER
DESCRIPTION
FORMAT
isum_avg[18:0]
VR load current. Averaged sum of all channel current data over RO
a user programmable averaging window (default = 16ms)
vavp_avg_mon[9:0]
AVP output voltage. Averaged VAVP monitored value ADC
RO
voltage.
kavp_XX[9:0]
AVP loadline slope. Nominal value of load line slope resistance R/W
input for case LL1 = X, LL0 = X.
load_line_offset_XX[4:0] AVP loadline VID offset. VID set-point load-line offset tolerance R/W
voltage for case LL1 = X, LL0 = X.
kavp_limit_XX[9:0]
Secondary overcurrent limit AVP loadline slope. Overcurrent
R/W
load line slope resistance input for case LL1 = X, LL0 = X.
isum_max_XX[7:0]
Overcurrent limit. Max load current threshold for secondary
R/W
slope roll-off of AVP voltage or overcurrent shutdown for case
LL1 = X, LL0 = X.
ptat_mon[5:0]
PTAT Temperature. Averaged PTAT calibration temperature
RO
output.
ptat_alert_ref[5:0]
PTAT alert temperature. PTAT sensor alert temperature
R/W
reference.
ptat_shutdown_ref[5:0] PTAT shutdown temperature. PTAT sensor shutdown
R/W
temperature reference.
temp_mon[5:0]
Thermistor temperature. Averaged Thermistor monitor
RO
temperature output.
therm_alert_ref[5:0]
Thermistor alert temperature. Thermistor sensor alert
R/W
temperature reference.
therm_shutdown_ref[5:0] Thermistor shutdown temperature. Thermistor sensor
R/W
shutdown temperature reference.
iuvp_thresh[5:0]
Input undervoltage threshold. IUVP comparator threshold fixed R/W
at 0.975V
oovp_limit_XX[5:0]
Output overvoltage protect threshold. Tracking VID overvoltage R/W
threshold for case LL1 = X, LL0 = X.
ouvp_limit_XX[5:0]
Output undervoltage protect threshold fixed at 0.6V
R/W
RANGE
MIN
MAX
0.00A
524.288A
RESOLUTION
1mA
0.0mV 3,196.875mV 3.125mV
0.0Ω
3.902mΩ 0.003815mΩ
0.0V 48.4375mV 1.5625mV
0.0Ω
15.610mΩ 0.01526mΩ
0.0A
+204.0A
0.800A
0°C
0°C
0°C
0°C
0°C
0°C
n/a
0.0mV
n/aV
157.5°C
157.5°C
157.5°C
157.5°C
157.5°C
157.5°C
.975V
787.5mV
600mV
2.5°C
2.5°C
2.5°C
2.5°C
2.5°C
2.5°C
0.25V
12.5mV
12.5mV
19
FN9163.1
August 5, 2005