AS1110 AMSCO [austriamicrosystems AG], AS1110 Datasheet - Page 13

• Manufacturer Part Number: AS1110
• Description: Constant-Current, 16-Channel LED Driver with Diagnostics
• Manufacturer: AMSCO [austriamicrosystems AG]

AS1110
Data Sheet - D e t a i l e d D e s c r i p t i o n
Detailed Error Reports
The detailed error report can be read out after global error mode has been run. At the falling edge of LD, the detailed
error report of the selected test is latched into the shift register and can be clocked out with n*16 clock cycles (n is the
number of AS1110s in a chain) via pin SDO. At the same time new data can be written into the shift register, which is
loaded on the next rising edge of pin LD. This pattern is shown at the output drivers, at the falling edge of OEN.
Detailed Temperature Warning Report
The detailed temperature warning report can be read out immediately after global error mode has been run. SDI must
be 1 for the first device. Bit0 of the 16bit data word represents the temperature flag of the chip.
Figure 13. Detailed Temperature Warning Report Timing Diagram
Detailed Temperature Warning Report Example
Consider a case where four AS1110s are cascaded in one chain. The detailed error report lists the temperatures for
each device in the chain:
In this case, IC3 is overheated and will generate a global error, and therefore 4*16 clock cycles are needed to write out
the detailed temperature warning report, and optionally read in new data. The detailed temperature warning report
would look like this:
The 0 in the detailed temperature warning report indicates that IC3 is the device with the over-temperature condition.
Note: In an actual report there are no spaces in the output.
www.austriamicrosystems.com
For detailed timing information see
OEN
SDO
CLK
SDI
LD
XXXXXXXXXXXXXXX1 XXXXXXXXXXXXXXX1 XXXXXXXXXXXXXXX0 XXXXXXXXXXXXXXX1
Global Flag Readout
t
GSW(ERROR)
t
t
(SU)ERROR
P4
Timing Diagrams on page
T
FLAG
IC1:[70°] IC2:[85°] IC3:[170°] IC4:[60°]
t
P4
t
H(L)
9.
DBit15
Revision 1.00
Temperature Error Report Output
DBit14 DBit13 DBit12 DBitn
Detailed Error Report Readout
New Data Input
Undefined
DBit2
DBit1
DBit0
TBit0
t
P1
Don’t
Care
Don’t
Care
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