ISL78229 Datasheet, PDF (47/71 Pages) Intersil Corporation – 2-Phase Boost Controller with Drivers

ISL78229
WRITE_PROTECT (10h)
Definition: This command is used to control writing to the ISL78229. The intent of this command is to provide protection against
accidental changes. This command is not intended to provide protection against deliberate changes to a device’s configuration or
operation. All supported commands may have their parameters read, regardless of the WRITE_PROTECT settings.
Data Length in Bytes: 1
Data Format: Bit Field
Type: R/W Byte
Protectable: Yes
Default Value: 00h
Units: N/A
COMMAND
Format
Bit Position
Access
Function
Default Value
7
R/W
0
6
R/W
0
5
R/W
0
WRITE_PROTECT (10h)
Bit Field
4
3
R/W
R/W
See Following Table
0
0
2
R/W
0
1
R/W
0
0
R/W
0
VALUE
10000000
01000000
00100000
DESCRIPTION
Disable all writes except to the WRITE_PROTECT command
Disable all writes except to the WRITE_PROTECT and OPERATION commands
Disable all writes except to the WRITE_PROTECT, OPERATION and VOUT_COMMAND commands
00000000
Enable writes to all commands
CAPABILITY (19h)
Definition: This command provides the way for a host system to determine some key capabilities of the ISL78229.
Data Length in Bytes: 1
Data Format: Bit Field
Type: Read Only
Protectable: N/A
Default Value: B0h
Units: N/A
COMMAND
Format
Bit Position
Access
Function
Default Value
CAPABILITY (19h)
Bit Field
7
6
5
4
3
2
1
0
R
R
R
R
R
R
R
R
See Following Table
1
0
1
1
0
0
0
0
BIT NUMBER
DESCRIPTION
7
Packet Error Checking
6:5
Maximum Bus Speed
BIT VALUE
MEANING
1
Packet Error Checking is supported
01
Maximum supported bus speed is 400kHz
4
SMBALERT#
3:0
Reserved
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1
0000
The device does have a SALERT# pin and does support the SMBus Alert
Response protocol
Reserved
FN8656.3
February 12, 2016