AS1130 datasheet(46/67 Pages) AMSOSRAM

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ams Datasheet

Page 45

[v2-01] 2016-Oct-12

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AS1130 − Register Description

Shutdown & Open/Short Register (0x09)

Per default this register is set to 0x02.

Figure 48:

Shutdown & Open/Short Register Format

The scan limit (0x04) defines also the number of segments for

the open/short detection.

0x09 Shutdown & Open/Short Register

Bit

Bit Name

Default

Access

Bit Description

7:5

000

n/a

4test_all

R/W

The LED open/short test is performed on all LED

locations

0: Disabled (unassembled or disabled LEDs will be

detected as open)

1: Enabled (unassembled LEDs will be detected as

open)

3auto_test

R/W

The automatic LED open/short test is started when

bit display_pic (0x00) or bit display_movie (0x01) is set

to “1”

0: Disabled

1: Enabled

2manual_test

R/W

The manual LED open/short test is started after the

update of Reg0x09

0: Disabled

1: Enabled

1init

R/W

0: Initialise control logic (internal state machine is

reset again)

1: Normal operation

0shdn

R/W

0: Device is in shutdown mode (outputs are turned off,

internal state machine stops)

1: Normal operation

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