ISL6424 Intersil, ISL6424 Datasheet - Page 10

• Manufacturer Part Number: ISL6424
• Description: Single Output LNB Supply and Control Voltage Regulator
• Manufacturer: Intersil

System Register Format
•
Transmitted Data (
When the R/W bit in the chip is set to 0, the main
microprocessor can write on the system registers (SR1/SR2)
of the ISL6424 via I
NOTE: OTF and OLF1&2 are “Read Only” bits and X is a “Don’t Care” for the function specified.
• R, W = Read and Write bit
• R = Read-only bit
All bits reset to 0 at Power-On
SR
SR
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
R, W
R, W
SR1
SR2
ISEL2
DCL
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1
0
0
1
ISEL1
ENT2
2
C bus. These will be written by the
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
I
2
C
bus WRITE mode)
ENT1
LLC2
10
ISEL2
R, W
R, W
X
X
X
X
X
0
1
X
X
X
X
X
X
0
0
1
1
X
X
X
X
X
DCL
TABLE 5. SYSTEM REGISTER (SR1 AND SR2) CONFIGURATION
VSEL2
LLC1
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
1
1
0
1
0
1
VSEL1
EN2
TABLE 3. SYSTEM REGISTER 1 (SR1)
TABLE 4. SYSTEM REGISTER 2 (SR2)
X
X
X
X
X
X
X
X
0
0
1
0
1
1
1
1
1
1
1
1
1
0
ISEL1
ENT2
R, W
R, W
EN1
OTF
X
X
X
X
X
X
X
X
X
X
X
1
1
1
1
1
1
1
1
1
1
0
ISL6424
OLF1
OLF2
ENT1
LLC2
R, W
R, W
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
microprocessor as shown below. The spare bits of SR1/SR2
can be used for other functions.
SR1 is selected
Vout1 = 13V, Vboost1 = 13V + Vdrop
Vout1 = 18V, Vboost1 = 18V + Vdrop
Vout1 = 14V, Vboost1 = 14V + Vdrop
Vout1 = 19V, Vboost1 = 19V + Vdrop
22kHz tone is controlled by DSQIN1 pin
22kHz tone is ON, DSQIN1 is disabled
Iout1 = 425mA max.
Iout1 = 775mA max.
Dynamic current limit NOT selected
Dynamic current limit selected
PWM and Linear for channel 1 disabled
SR2 is selected
Vout2 = 13V, Vboost2 = 13V + Vdrop
Vout2 = 18V, Vboost2 = 18V + Vdrop
Vout2 = 14V, Vboost2 = 14V + Vdrop
Vout2 = 19V, Vboost2 = 19V + Vdrop
22kHz tone is controlled by DSQIN2 pin
22kHz tone is ON, DSQIN2 is disabled
Iout2 = 425mA max.
Iout2 = 775mA max.
PWM and Linear for channel 2 disabled
VSEL2
LLC1
R, W
R, W
VSEL1
R, W
R, W
EN2
FUNCTION
FUNCTION
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R, W
EN1
OTF
R
September 13, 2005
OLF1
OLF2
R
R
FN9175.3