DS3994 Maxim Integrated Products, DS3994 Datasheet - Page 19

• Manufacturer Part Number: DS3994
• Description: 4-Channel Cold Cathode Fluorescent Lamp Controller
• Manufacturer: Maxim Integrated Products

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DataSheet
4
The DS3994’s register map is shown in Table 4.
Detailed register and bit descriptions follow in the sub-
sequent tables.
Table 4. Register Map
*This is the factory-programmed default stored in EEPROM.
ADDRESS
U
FD-FFh
.com
BYTE
FAh
FBh
FCh
F0h
F1h
F2h
F3h
F4h
F5h
F6h
F7h
F8h
F9h
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Memory
NAME
BYTE
BDS1
BDS2
BDS3
BDS4
User
CR1
CR2
CR3
Detailed Register Descriptions
DEFAULT*
FACTORY
21h
43h
65h
77h
20h
08h
00h
00h
00h
00h
00h
00h
00h
00h
Burst dimming stagger for channel 1.
Burst dimming stagger for channel 2.
Burst dimming stagger for channel 3.
Burst dimming stagger for channel 4.
____________________________________________________________________
BVRS
BIT 7
LOFS
DPD
EE
—
—
Fluorescent Lamp Controller
BIT 6
FRS
LD1
IGO
EE
—
—
—
—
—
—
4-Channel Cold-Cathode
BIT 5
ARD
LD0
SB2
—
—
EE
RGSO
BIT 4
SB1
—
—
0
EE
DPSS
BIT 3
SB0
EE
—
—
1
POSCR1
LST1
BIT 2
LFSS
EE
—
—
—
—
—
—
POSCR0
POSCS
BIT 1
LST0
EE
—
—
SLOPE
UMWP
BIT 0
LOC
EE
—
—
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