c644ultrt Semtech Corporation, c644ultrt Datasheet - Page 20

• Manufacturer Part Number: c644ultrt
• Description: Light Management Unit With 4 Ldos And Sempulse Interface
• Manufacturer: Semtech Corporation

Register Map (continued)
MBL4 through MBL0 [D4:D0]
These bits are used to set the current for the main back-
light current sinks. All enabled current sinks will sink the
same current as shown in Table 4.
() Reserved for future use.
MBL4 MBL3 MBL2 MBL1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
















Table 4 — Main Backlight Current Settings
0
0
0
0
0
0
0
0








0
0
0
0
0
0
0
0








0
0
0
0




0
0
0
0




0
0
0
0




0
0
0
0




0
0


0
0


0
0


0
0


0
0


0
0


0
0


0
0


MBL0
0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Current (mA)
Backlight
See note 
See note 
See note 
0.5
.5
2.5
3.5
4.5
0

2
3
4
5
6
7
8
9
20
2
23
25
0

2
3
4
5
6
7
8
9
Sub Backlight Current Control Register (02h)
This register is used to set the currents for the LED drivers
designated as sub 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.
SC644
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