tca62746 Marktech Optoelectronics, tca62746 Datasheet - Page 16

• Manufacturer Part Number: tca62746
• Description: 16-output Constant Current Led Driver With Output Open/short Detection
• Manufacturer: Marktech Optoelectronics

Reading Error Status Code
Switching to Normal Mode
When the above signal sequence is set in the OOD and OSD modes, the error state code can be read through the
terminal SOUT.
The signal sequence set to be in the Normal mode.
Error state code of OOD detection mode
Error state code of OSD detection mode
Description
In the OOD and OSD modes, the state of OE must be switched from “H” to “L”. And, then, This IC would
execute Open-/Short-circuit Detection as well as enabling output ports to drive current.
At least three clock must be inputs at the “L” state of OE and the third clock should be at least 2 µs after
the falling edge of OE . the detected error status into the built-in shift register is done by rising edge of
this third clock.
When OE is “L", the serial data cannot be input from the terminal SIN.
When OE is changed from “L" to “H", the error state code is output from the terminal SOUT
synchronizing with the clock.
SLAT
SCK
OE
V
V
V
V
OOD
OOD
OSD
OSD
≤ V
> V
≥ V
< V
H
1
L
O
O
O
O
2
L
L
SOUT
SCK
OE
H
3
L
H
4
L
H
H
5
L
1
L
H
6
L
MIN 2 µs
2
L
Error state code
Error state code
“L” level
n > = 3
3
L
16
0
1
0
1
Bit
15
Error status code
H
Bit
14
H
Bit
13
H
Bit
12
H
Bit
11
TCA62746AFG/AFNG
H
Bit
10
State of output terminal
State of output terminal
Short circuit
Open circuit
Normal
Normal
2007-05-22