ISL6423B Datasheet, PDF (12/16 Pages) Intersil Corporation – Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs

SR1H
0
0
0
0
0
0
0
0
0
0
0
SR1M
0
0
0
0
0
0
0
0
0
0
0
SR1L
0
0
0
0
0
0
0
0
0
0
0
OTF
X
X
X
X
X
X
X
X
X
0
1
TABLE 7. STATUS REGISTER SR1 CONFIGURATION
CABF OUVF OLF BCF
FUNCTION
X
X
X
X SR1 is selected
X
X
0
X I_OUT ≤ set limit, Normal Operation
X
X
1
X I_OUT > Static/Dynamic Limiting Mode/Power blocks disabled
X
X
X
0 Iobck ≤ set limit, Normal Operation
X
X
X
1 Iobck > Dynamic Limiting Mode / Power blocks disabled
X
0
X
X V_IN/V_OUT within specified range
X
1
X
X V_IN/V_OUT is not within specified range
0
X
X
X Cable is connected, Io is >20mA
1
X
X
X Cable is open, Io <2mA
X
X
X
X T_J ≤130°C, Normal operation
X
X
X
X T_J >150°C, Power blocks disabled
TABLE 8. TONE REGISTER SR2 CONFIGURATION
SR2H SR2M SR2L ENT MSEL TTH
X
X
FUNCTION
0
0
1
X
X
X
X
X SR2 is selected
0
0
1
0
0
X
X
X Int Tone = 22kHz, modulated by EXTM, T_r, T_f = 10µs typ
0
0
1
0
1
X
X
X Ext 22k modulated input, T_r, T_f = 10µs typ
0
0
1
1
0
X
X
X Int Tone = 22kHz, modulated by ENT bit, T_r, T_f = 10µs typ
0
0
1
X
X
0
X
X TXT = 0; Decoder Rx threshold is set at 200mV max
0
0
1
X
X
1
X
X TXT = 0; Decoder Tx threshold is set at 400mV min
NOTE: X indicates “Read Only” and is a “Don’t Care” for the Write mode.
TABLE 9. COMMAND REGISTER SR3 CONFIGURATION
SR3H SR3M SR3L DCL VSPEN X ISELH ISELL
FUNCTION
0
1
0
X
X
X
X
X SR3 is selected
0
1
0
0
X
X
0
0 I_OUT limit threshold = 305mA typ.
0
1
0
0
X
X
0
1 I_OUT limit threshold = 570mA typ.
0
1
0
0
X
X
1
0 I_OUT limit threshold = 705mA typ.
0
1
0
0
X
X
1
1 I_OUT limit threshold = 890mA typ.
0
1
0
1
X
X
X
X Dynamic current limit NOT selected
0
1
0
0
X
X
X
Dynamic current limit selected
0
1
0
X
0
X
X
X SELVTOP H/W pin Enabled
0
1
0
X
1
X
X
X SELVTOP H/W pin Disabled
NOTE: X indicates “Read Only” and is a “Don’t Care” for the Write mode.
12
FN6412.1
April 10, 2007