TLC5923_16 Datasheet, PDF (13/28 Pages) Texas Instruments – 16-CHANNEL LED DRIVER WITH DOT CORRECTION

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TLC5923
SLVS550B – DECEMBER 2004 – REVISED JANUARY 2013
16bit LOD Status Flags
16bit LOD Internal Latch
SIN
Input Shift Register
SOUT
(FIFO Register)
GS Register
Figure 11. LOD Flags and Latches
Shifting the LOD Data Out
SOUT outputs the LOD data as shown in Figure 12, where:
• XLAT rising edge
Holds the LOD status flag. SOUT outputs LOD OUT15 data. BLANK must be low.
• XLAT = H
Sets or resets the input shift register depending on each LOD data.
Set/Reset function is higher priority than shifting the register value. If XLAT is high and the SCLK pin is
pulsed, all LOD data are kept in the shift register and SOUT keeps the LOD OUT15 data.
• XLAT = L
Ready to shift out LOD data by SCLK. SOUT contains LOD OUT15 data at this time. BLANK can be high or
low during this time.
• SCLK rising edge
SOUT outputs LOD OUT14 at the first SCLK rising edge. SOUT outputs LOD OUT13 at the second SCLK
rising edge, and continues to output the next LOD data at each SCLK rising edge.
XLAT
SCLK
SOUT
LOD
OUT15
LOD
OUT14
LOD
OUT13
Figure 12. The LOD Data of SOUT
Figure 13 shows the timing chart of reading LOD data.
LOD
OUT12
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