ISL6422 INTERSIL [Intersil Corporation], ISL6422 Datasheet - Page 13

• Manufacturer Part Number: ISL6422
• Description: Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs
• Manufacturer: INTERSIL [Intersil Corporation]

NOTE: X indicates “Read Only” and is a “Don’t Care” for the Write mode.
NOTE: X is a “Don’t Care” for the Write mode.
SR4H SR4M
SR5H SR5M
SR6H
R, W
R, W
R, W
SR1H
SR2H
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SR6M
R, W
R, W
R, W
SR1M
SR2M
TABLE 6. CONTROL REGISTER 4 (SR4)
TABLE 7. STATUS REGISTER 5 (SR5)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
TABLE 8. TONE REGISTER 6 (SR6)
SR4L
SR5L
SR6L
R, W
R, W
R, W
SR1L
SR2L
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
ENT2
R, W
R, W
EN1
X
X
ENT1
OTF
13
X
X
X
X
X
X
X
X
X
0
1
X
0
0
1
X
X
CABF2 OUVF2 OLF2
MSEL2 TTH2
R, W
R, W
R
X
CABF1 OUVF1
MSEL1
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
0
R, W
TABLE 11. STATUS REGISTER SR1 CONFIGURATION
R, W
TABLE 12. TONE REGISTER SR2 CONFIGURATION
R
X
TTH1
VTOP1 VBOT1
R, W
R, W
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
R
X
BCF2
OLF1
R, W
R, W
R
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
ISL6422
BCF1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
Transmitted Data (
When the R/W bit in the chip is set to 0, the main
microprocessor can write on the system registers (SR1
through SR8) of the ISL6422 via I
written by the microprocessor as shown below. The spare
bits of registers can be used for other functions.
SR7H SR7M SR7L
SR1 is selected
I
I
I
I
V
V
Cable is connected, Io is >20mA
Cable is open, Io <2mA
T
T
SR2 is selected
Internal Tone = 22kHz, modulated by EXTM1, T
Ext 22K modulated input, T
Internal Tone = 22kHz, modulated by the ENT1 bit, T
TXT = 0; Decoder Rx threshold is set at 200mV max
TXT = 0; Decoder Tx threshold is set at 400mV min
R, W
SR8H SR8M
OUT
OUT
OBCK
OBCK
R, W
IN
IN
J
J
≤130°C, Normal operation
>150°C, Power blocks disabled
/V
/V
≤set limit, Normal Operation
>Static / Dynamic Limiting Mode/Power blocks disabled
OUT
OUT
≤set limit, Normal Operation
>Dynamic Limiting Mode/Power blocks disabled
R, W
R, W
within specified range
is not within specified range
TABLE 10. CONTROL REGISTER 8 (SR8)
TABLE 9. COMMAND REGISTER 7 (SR7)
R, W
SR8L
R, W
DCL2 VSPEN2 ISEL2R ISEL2H ISEL2L
I
R, W
2
C
R, W
EN2
r
FUNCTION
FUNCTION
, T
bus WRITE mode)
f
= 10µs typ
R, W
R, W
X
2
C bus. These will be
R, W
R, W
X
r
, T
VTOP2 VBOT2
f
R, W
R, W
= 10µs typ
r
, T
f
= 10µs typ
April 10, 2007
FN9190.1
R, W
R, W