SC644 SEMTECH [Semtech Corporation], SC644 Datasheet - Page 19

• Manufacturer Part Number: SC644
• Manufacturer: SEMTECH [Semtech Corporation]

Register Map
Notes:
() all registers are write-only
(2) Addresses 03h and 04h are not used
(3) 0 = always write a 0 to these bits
Definition of Registers and Bits
BL Enable Control Register (00h)
This register enables the backlight current sinks.
BL6EN through BL1EN [D5:D0]
These bits are used to enable current sinks. These current
sinks will then sink whatever current is set in the corre-
sponding current control register.
Main Backlight Current Control Register (01h)
This register is used to set the currents for the LED drivers
designated as main backlight current sinks. Note these
current sinks can be disabled using register 00h or by
writing the 0mA value into this register.
Bit D5
This bit is unused and is always a zero.
Address
0Ah
00h
0h
02h
05h
06h
07h
08h
09h
(2)
SFADE
BL6EN
D5
0
0
0
0
0
0
0
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(1)
SFADE0
BL5EN
MBL4
SBL4
D4
0
0
0
0
0
(3)
(3)
(3)
(3)
(3)
LDOV3
LDO3V3
LDO4V3
BL4EN
SFADE
MBL3
SBL3
D3
0
0
(3)
(3)
MFADE
LDOV2
LDO2V2
LDO3V2
LDO4V2
BL3EN
MBL2
SBL2
MB2
D2
LDOV
LDO2V
LDO3V
LDO4V
MFADE0
BL2EN
MBL
SBL
MB
D1
LDOV0
LDO2V0
LDO3V0
LDO4V0
MFADE
BLEN
MBL0
SBL0
MB0
D0
Value
Reset
00h
00h
00h
00h
00h
00h
00h
00h
00h
Main/Sub Backlight Fade
Main Backlight Current
Sub Backlight Current
Main/Sub Bank Select
Backlight Enable
Description
LDO
LDO2
LDO3
LDO4
SC644
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