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AS1119

Datasheet - Regi s t er Description

9 Register Description

Register Selection

Within this register the access to one of the RAM sections or to the Control register is selected. After one section is selected this section is valid

as long as an other section is selected.

Data Definition of the single frames

One frame consits of 2 blocks (à 8x9 LED-matrix) or 3 blocks (à 5x6 LED-matrix). This configuration is set in the AS1119 config register (see

Table 20 on page 24

).

In the internal DPRAM of the device 6 frames can be stored. For each frame the following parameters have to be stored.

- LED is ON or OFF.

- LED is steady ON or blinking.

- The intensity of every single LED can be set via a 8 bits PWM.

Note:

After power-up the data in the DPRAM is undefined (either ‘0’ or ‘1’).

2 Blocks with 8x9 LED Matrix

The AS1119 can be configured to control two seperated blocks of LEDs matrixes. This must be set via the bit D0 in the AS1119 config register

(see AS1119 Config Register (0x04) on page 24)

.

Figure 21. 8x9 LED Matrix with two blocks

Table 6. Register Selection Address Map

Register Section

Address

Data

Description

HEX A7 A6 A5 A4 A3 A2 A1 A0 HEX D7 D6 D5 D4 D3 D2 D1 D0

NOP

253

11111101

0

00000000

No operation

Data Frame 0

1

00000001

Selection of

RAM section for frame

Data Frame 1

2

00000010

Data Frame 2

3

00000011

Data Frame 3

4

00000100

Data Frame 4

5

00000101

Data Frame 5

6

00000110

Control Register

11

00001011

Selection of

Control Register