TLC5954 Datasheet, PDF (19/45 Pages) Texas Instruments – TLC5954 48-Channel, Constant-Current LED Driver with Global Brightness Control, LED Open-Short Detection, and Power-Save Mode

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Feature Description (continued)
SIN
ON
G0A
ON
R0A
L
ON ON ON ON
B15B G15B R15B B6B
ON ON ON ON
R1B B0B G0B R0B
TLC5954
SBVS241 – APRIL 2014
L
ON ON ON
B15C G15C R15C
SCLK
47 48 49
LAT
1
23
4
5
46 47 48 49
1
23
---
Shift Register
LSB Data
(Internal)
Shift Register
LSB +1 Data
(Internal)
Shift Register
MSB-1 Data
(Internal)
Shift Register
MSB Data
(Internal)
Output On or Off
Data Latch
(Internal)
SIDLD in FC
Data Latch
(Internal)
SOUT
BLANK
SID Holder Data
(Internal)
48-Bit LOD or LSD
Circuit Output Data
(Internal)
ON ON
ON
B0A G0A
R0A
ON ON
R1A B0A
ON
G0A
SID
0
L
ON
B15A
SID SID
1
0
L
XXb
SID SID
1
0
L
SID
0A
L
ON ON ON
B15B G15B R6B
SID
1A
SID
0A
L
ON ON
B15B G15B
ON ON
R1B B0B
ON
G0B
ON
R0B
ON
G1B
ON ON
R1B B0B
ON
G0B
SID SID SID SID SID
47A 46A 45A 44A 43A
SID SID
1A 0A
L
SID data selected by the SIDLD bit of FC data are loaded into the
common shift register at the LAT rising edge except SIDLD = 00b.
SID SID SID SID
47A 46A 45A 44A
SID SID SID
2A 1A 0A
SID
0B
SID
1B
SID
47B
ON
B15B
L
L
ON
B15C
SID
0B
L
SID SID
46B 45B
SID SID
47B 46B
New On or Off Data (B15A-R0A)
Old On or Off Data
New On or Off Data (B15B-R0B)
LOD data are selected when SIDLD = 01h. LSD data are selected when SIDLD is set to 10b.
No SID data are loaded when SIDLD is 00h or 11h.
SID SID SID SID
47A 46A 45A 44A
48-Bit SID Data
SID SID SID
2A 1A 0A
L
SID SID
47B 46B
Selected detector data by SIDLD are held in the SID holder when BLANK is high. The held data are loaded into the common shift register
as SID except when SIDLD is 00h.
Detector Data
XXXXh
Detector Data
XXXXh
LOD data go through the SID holder when BLANK is low.
Detector Detector Data
XXXXh
0000h
Detector Data
XXXXh
The detector data are not stable immediately after the BLANK signal goes low.
Detector Data
0000h
Figure 28. SID Read Timing Diagram
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