ISL6422 Datasheet, PDF (17/19 Pages) Intersil Corporation – Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs

ISL6422
ADDR0 and ADDR1 Pins
Connecting either ADDR0 or ADDR1 to GND, the chip I²C
interface address is 0001000, but it is possible to choose
between four different addresses simply by setting the logic
as indicated in Table 19.
TABLE 19. ADDRESS PIN CHARACTERISTICS
V_ADDR
V_ADDR-1
“0001000”
ADDR1
0
ADDR0
0
V_ADDR-2
“0001001”
0
1
V_ADDR-3
“0001010”
1
0
V_ADDR-4
“0001011”
1
1
I²C Electrical Characteristics
PARAMETER
Input Logic High, VIH
Input Logic Low, VIL
Input Logic Current, IIL
Input Hysterisis
SCL Clock Frequency
TABLE 20. I²C SPECIFICATIONS
TEST CONDITION
MIN
SDA, SCL
2.0V
SDA, SCL
SDA, SCL;
0.4V < V_DD < 3.3V
SDA, SCL
165mV
0
I²C Bit Description
TABLE 21.
BIT NAME
DESCRIPTION
EN1 and EN2
ENable Output for channels 1 and 2
VTOP1 and VTOP2
Voltage TOP Select (that is, 18V/19V for channels 1 and 2)
VBOT1 and VTOP2
Voltage BOTtom Select (that is, 13V/14V for channels 1 and 2)
ENT1 and ENT2
ENable Tone for channels 1 and 2
MSEL1 and MSEL2
Modulation SELect for channels 1 and 2
TFR1 and TFR2
Tone Frequency and Rise time select for channels 1 and 2
DCL1 and DCL2
Dynamic Current Limit select for channels 1 and 2
VSPEN1 and VSPEN2 Voltage Select Pin ENable for channels 1 and 2
ISEL1H and ISEL2H,
ISEL1L and ISEL2L,
ISEL1R and ISEL2R
Current limit “I” SELect high and low bits for channels 1 and 2
OTF
Over Temperature Fault bit
CABF1/2
CABle Fault or open status bit for channels 1 and 2
OUVF1/2
Over and Under Voltage Fault status bit for channels 1 and 2
OLF1/2
Over Load Fault status bit for channels 1 and 2
BCF1/2
Backward Current Fault Bit for channels 1 and 2
TTH1/2
Tone THreshold is the OR of the signal pin TXT1 or TXT2
17
TYP
200mV
100kHz
MAX
0.8V
10μA
235mV
400kHz
FN9190.1
April 10, 2007