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Revision 1.04

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AS1119

Datasheet - Regi s t er Description

Current Source Block A, B, C Registers (0x05, 0x06, 0x07)

Within this registers the current for every single LED in one block can be set from 0mA to 31mA in 255 steps (8 bits). Per default this register is

set to 0x00.

Charge Pump Config Register (0x08)

In this register the characteristics of the Charge Pump can be set. By the use of the charge pump (bit 0) the supply voltage for the LEDs can be

reduced again during operation. This period is defined by bit 4:2.

(application). Per default this register is set to 0x1E.

Table 21. Current Sourcer Register Format

Current Source Registers

Bit

Bit Name

Default

Access

Bit Description

Address 0x05

7:0

Analog Current

Matrix A

0000000

R/W

00000000: 0mA

..........

11111111: 31mA

Address 0x06

7:0

Analog Current

Matrix B

0000000

R/W

00000000: 0mA

..........

11111111: 31mA

Address 0x07

7:0

Analog Current

Matrix C

0000000

R/W

00000000: 0mA

..........

11111111: 31mA

Table 22. AS1119 Config Register Format

0x08 Charge Pump Config Register

Bit

Bit Name

Default

Access

Bit Description

7:5

-

000

n/a

4:2

Timeframe for reduce

supply test

111

R/W

000: 0.3s

001: 0.5s

010: 0.8s

011: 1.0s

100: 1.3s

101: 1.6s

110: 1.8s

111: 2.1s

1

Reduce supply option

1

R/W

0: reduce supply option off

1: reduce supply option on

0

Charge Pump

0

R/W

0: Charge Pump disable

1: Charge Pump enable