LM3532TMX-40ANOPB National Semiconductor Corporation, LM3532TMX-40ANOPB Datasheet - Page 34

• Manufacturer Part Number: LM3532TMX-40ANOPB
• Description: High Efficiency White Led Driver With Programmable Ambient Light Sensing Capability And I2c-compatible Interface
• Manufacturer: National Semiconductor Corporation

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ALS ZONE READBACK / INFORMATION
The ALS Zone Readback and ALS Zone Information Read-
back registers each contain information on the current ambi-
ent light brightness zone. The ALS Zone Readback register
contains the ALS Zone after the averager and discriminator
block and reflects both up and down changes in the ambient
N/A
N/A
Not Used
Bits [7:4]
Not Used
Bits [7:3]
0 = No change in ALS Zone (default)
1 = There was a change in the ALS Zone
since the last read of this register. This bit
is cleared on read back.
TABLE 18. ALS Zone Information Register Description (Address 0x24)
TABLE 19. ALS Zone Readback Register Description (Address 0x25)
000 = Zone 0 (default)
001 = Zone 1
010 = Zone 2
011 = Zone 3
1XX = Zone 4
Zone Change Bit
Bit 3
34
000 = Zone 0 (default)
001 = Zone 1
010 = Zone 2
011 = Zone 3
1XX = Zone 4
light brightness zone. The ALS Zone Information register re-
flects the contents of either the ALS Zone Readback register
(with up and down transition). This register also includes a
Zone Change bit (bit 3) which is written with a 1 each time the
ALS zone changes. This bit is cleared upon read back of the
ALS Zone Information register.
Brightness Zone
Bits [2:0]
Brightness Zone
Bits [2:0]