TLC5948A Datasheet, PDF (26/50 Pages) Texas Instruments – 16-Channel, 16-Bit, ES-PWM, Full Self-Diagnosis LED Driver

TLC5948A
SBVS192 – MARCH 2012
www.ti.com
SIN
SCLK
GS Data Write
GS0
4A
GS0
3A
GS0
2A
GS0
1A
252 253 254 255 256
GS0
0A
257
Control Data Write
High
Not
Valid
Not
Valid
1
2
3
DC0
3A
DC0
2A
DC0
1A
DC0
0A
254 255 256 257
GS Data Write
Low
GS15
15B
GS15
14B
GS15
13B
1234
LAT
GSCLK
BLANK Bit
in First Control Data Latch
(Internal)⁽¹⁾
Data = 0
Common Shift Register
(Internal)
First GS Data Latch
(Internal)
Old GS Data
New GS Data (GSn-nA)
Second GS Data Latch
(Internal)
Old GS Data
First Control Data Latch
(Internal)
Old Control Data
Second Control Data Latch
(Internal)
OFF
OUTn
ON
SOUT
Old Control Data
GS, DC, and BC Controlled by Old Data
Low
(Bit 257 Data)
GS15 GS15 GS15
15A
14A
13A
GS0
2A
GS0
1A
GS0
0A
(1) BLANK data do not change with Auto Display Repeat enabled.
Figure 28. Auto Data Refresh Function 1
65536
65535 1 2 3 4 5 6 7 8
High
New GS Data (GSn-nA)
New Control Data (DCn-nA)
New Control Data (DCn-nA)
GS, DC, and BC Controlled
by New Data
SIN
SCLK
GS Data Write
GS0
4A
GS0
3A
GS0
2A
GS0
1A
252 253 254 255 256
GS0
0A
257
Control Data Write
High
Not
Valid
Not
Valid
1
2
3
DC0
3A
DC0
2A
DC0
1A
254 255 256
DC0
0A
257
Control Data Write
High
Not
Valid
Not
Valid
DC0
0A
1 2 3 257
LAT
GSCLK
BLANK Bit
in First Control Data Latch
(Internal)⁽¹⁾
Common Shift Register
(Internal)
Data = 0
Data = 1
First GS Data Latch
(Internal)
Old GS Data
New GS Data (GSn-nA)
Second GS Data Latch
(Internal)
Old GS Data
New (GSn-nA)
First Control Data Latch
(Internal)
Old Control Data
New (DCn-nA)
Second Control Data Latch
(Internal)
Old Control Data
New (DCn-nA)
OFF
OUTn
ON
SOUT
GS, DC, and BC Controlled by Old Data
Low
(Bit 257 Data)
GS15
15A
GS15 GS15
14A
13A
GS0
2A
GS0
1A
GS0
0A
High
(Bit 257 Data)
Not
Valid
(1) The BLANK bit value is changed after the LAT rising edge.
(2) GS, DC, and BC are controlled by new data.
Figure 29. Auto Data Refresh Function 2
123
'0'
New
Note (2)
High
26
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