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1
2
3
0
4
5
6
7
1
0
CLK
OE(ED2)
LE(ED1)
SDI
8-Bit Configuration Code
Bit 7 Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
2
3
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
CLK
OE(ED2)
LE(ED1)
SDO
Data source of
shift register
Error Detection
SDI
SDI
Error Status Code
Bit 7
Bit 6
Bit 5
Bit 4
>2 µs
SLVS695D – JUNE 2007 – REVISED JANUARY 2015
While in Special Mode, the TLC591x cannot simultaneously transfer serial data and detect LED load error status.
Figure 17. Reading Error Status Code
9.4.3 Writing Configuration Code in Special Mode
When in Special Mode, the active high signal LE(ED1) latches the serial data in the Shift Register to the
Configuration Latch, instead of the Output Latch. The latched serial data is used as the Configuration Code.
The code is stored until power off or the Configuration Latch is rewritten. As shown in
, the timing for
writing the Configuration Code is the same as the timing in the Normal Mode to latching output channel data.
Both the Configuration Code and Error Status Code are transferred in the common 8-bit Shift Register. Users
must pay attention to the sequence of error detection and current adjustment to avoid the Configuration Code
being overwritten by Error Status Code.
Figure 18. Writing Configuration Code
20
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