SMH4814
Preliminary Information
CONFIGURATION REGISTERS (CONTINUED)
Register R08 – OV/UV Hysteresis.
Bits D[7:4] control the OV Hysteresis Voltage level. Bits D[4:0] control the UV Hysteresis Voltage level.
Register R08
D7
0
D6
D5
D4
0
D3
X
D2
X
D1
X
D0
X
Action
OV Hysteresis = ((n+1)*32), where n is the value
stored in bits 7:4. OV Hystersis ranges from 32mV
to 512mV, with a default value (shown here) of
160mV
1
0
UV Hysteresis = ((n+1)*32), where n is the value
stored in bits 7:4. UV Hystersis ranges from 32mV
to 512mV, with a default value (shown here) of
160mV
X
X
X
X
0
1
0
0
Register R09 – Current regulation Offsets, Current DAC max and OV/UV reference voltage
Bits D[7:6] control the Current Regulation Offset. Bits D[5:4] control the Current DAC Max Voltage. Bits D[3:2] control
the OV reference voltage range. Bits D[1:0] control the UV reference voltage range.
Register R09
D7
0
D6
D5
D4
-
D3
-
D2
-
D1
-
D0
-
Action
Current Regulation Offset is 12.5% (This is the
percentage above the Over Current trip point at
which current is regulated)
0
-
0
1
1
1
0
1
-
-
-
0
0
1
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Current Regulation Offset is 25%
Current Regulation Offset is 50%
Current Regulation Offset is 100%
Current DAC Max Voltage is 128mV
Current DAC Max Voltage is 256mV (default)
Current DAC Max Voltage is 512mV
Current DAC Max Voltage is 1.024V
OV Reference is 2.048V
-
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
0
1
1
-
-
1
0
1
-
-
-
-
-
-
-
0
0
1
1
0
1
0
1
-
OV Reference is 2.864V
-
-
-
-
-
-
OV Reference is 3.072V
-
-
-
OV Reference is 4.096V
0
UV Reference is 2.048V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
0
1
UV Reference is 2.864V
UV Reference is 3.072V
UV Reference is 4.096V
Summit Microelectronics, Inc
2080 2.0 07/21/05
35
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
