TLC5958 Datasheet, PDF (15/28 Pages) Texas Instruments – TLC5958 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED Open Detection and Display Data Memory Support 32-Multiplexing

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10.2 Functional Block Diagram
OUTG0
OUTR1
OUTR0
OUTB0
TLC5958
SLVSCE7A – MAY 2014 – REVISED SEPTEMBER 2014
OUTB15
OUTG15
VCC
IREF
IREFGND
VCC
Reference
current
control
Vsync
GS Counter
Line read counter and
Sub-period counter
LED Open Detection (LOD)
48
30
48CH Constant Current Sink
3bit BC and 27bit CC
48
1
Programmable Group delay
48
Detection
Voltage
2
ES-PWM Decoder and
timing control for 48CH
48
LAT
SCLK
SIN
Line address
for read
Address
decoder and
writing control
BANK_SEL
48kbit SRAM
BANK A
16bit x48CH
x 32Line
BANK B
16bit x48CH
x 32Line
Vsync
48
WRTGS
Vsync
Command
Decoder
WRTFC
Thermal
Pad
GND
READFC1/2
READSID
Power
save
control
To all
analog
circuit
44bit FC1 register
17bit FC2 register
43
LSB
MSB
48bit Common shift register
0
47
48
48bit LOD data
SOUT
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