AS1119-BWLT austriamicrosystems, AS1119-BWLT Datasheet - Page 27

• Manufacturer Part Number: AS1119-BWLT
• Description: IC LED 144CH DRIVER 36WLCSP
• Manufacturer: austriamicrosystems

Specifications of AS1119-BWLT

• Display Type: LED
• Configuration: Dot Matrix
• Interface: I²C
• Current - Supply: 4mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-UFBGA, 36-WLCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Digits Or Characters: -
• Other names: AS1119-BWLTTR

AS1119
Datasheet - R e g i s t e r D e s c r i p t i o n
Shutdown Register (0x0A)
The default setting of this register is 0x00. To get the AS1119 operational the bit D0 has to be set to ‘1’.
Table 24. Shutdown Register Format
I²C Interface Monitoring Register (0x0B)
This register is used to monitor the activity on the I²C bus. If a deadlock situation occurs (e.g. the bus SDA pin is pulled
to low and no communication is possible) the chip will reset the I²C interface and the master is able to start the commu-
nication again.
The time window for the reset of the interface of the AS1119 can bes set via 7 bits from 256µs to 33ms. The default
setting of this register is 0xFF.
Table 25. I²C Interface Monitoring Register Format
Open/Short Status Register (0x0C)
This is a read only register. Within this register the result of the open/short test can be read out. It’s also stated if the
test is completed or still running. The default setting of this register is 0x00.
Table 26. Open/Short Status Register Format
www.austriamicrosystems.com/LED-Driver-ICs/AS1119
Bit
7:1
Bit
7:2
Bit
0
0
7
6
5
4
3
2
1
0
Time out window
short test result
short test result
short test result
open test result
open test result
open test result
I²C Monitor
Bit Name
Bit Name
Bit Name
shutdown
Matrix C
Matrix B
Matrix A
Matrix C
Matrix B
Matrix A
status
-
-
0000000
Default
Default
1111111
Default
0
1
0
0
0
0
0
0
0
0
0x0B I²C Interface Monitoring Register
0x0C Open/Short Status Register
Access
Access
Access
0x0A Shutdown Register
R/W
R/W
R/W
n/a
n/a
R
R
R
R
R
R
R
0: shutdown
1: normal operation
0 to 127 => 1 to 128x256µs
0000000: 256µs
........
1111111: 32.7ms
0: I²C monitoring off
1: I²C monitoring on
0: no test
1: test ongoing
0: no error detected
1: short in Matrix C
0: no error detected
1: short in Matrix B
0: no error detected
1: short in Matrix A
0: no error detected
1: open in Matrix C
0: no error detected
1: open in Matrix B
0: no error detected
1: open in Matrix A
Revision 1.03
Bit Description
Bit Description
Bit Description
27 - 31