TLC5930 Datasheet, PDF (14/39 Pages) Texas Instruments – 12-CHANNEL LED DRIVER

TLC5930
SLLS528 – MARCH 2002
PRINCIPLES OF OPERATION
command packet and operation
internal reset
By sending this packet once, the internal register within all the devices connected is set to the default value and
synchronized with the controller. Note that individual reset for the device is not available.
packet configuration
default value
REGISTER
ID
Plane brightness
ID (bin) CMD (bin) CMD (bin)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{00000000 00000000 00000011}
xxxxxxxx
111111 (bin)
DEFAULT VALUE
Indeterminate (no write)
100%
Frequency division ratio
0000 (bin)
Dot correction
Color tone correction
Gray scale
CCEN–2
(color tone correction ON/OFF)
FORCE OFF
FORCE ON
DCEN
BCEN
LKDEN
DSGSL
OVM comparator voltage
OVMF, OVMFA, GEF, HEF,
TEF
11111111 (bin) × 12 (output)
00000000 (bin) × 4
0000000000 (bin) × 12 (output)
000 (bin)
0
0
0
0
0
0
0000 (bin)
1
initialization
1/1 (no frequency division)
100%
0%
0
Color tone correction disable
Normal operation
Normal operation
Dot correction disable
Brightness control disable
LKD disable
Use GCLK terminal
0.3 V
COMMENTS
Automatic ID setting
Plane brightness adjustment
data setting
Plane brightness correction
data setting
Dot correction data setting
Color tone correction setting
Gray scale data setting
Color tone correction control
Operation mode setting
Operation mode setting
Operation mode setting
Operation mode setting
Operation mode setting
Operation mode setting
Operation mode setting
HSYNC, fault information
reading
During power up, the device is in an indeterminate condition. To fully reset the device after power up, it is
necessary to send an internal reset packet after entering the reset pulse to the XRST terminal or after sending
a 0 to each device 256 times as a dummy and then 03h.
Table 1. Input Configuration After Power-Up When Using XRST (reset pulse + 24 bit)
XRST
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{RESET (NEGATIVE PULSE)}
INTERNAL RESET PACKET
00000000
00000000
00000011
(03000003h)
Note: Both DTIN and STIN should be 0 during XRST 0.
Table 2. Input Configuration After Power-Up When Not Using XRST (256 bit × devices + 24 bit)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{DUMMY (bin)}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{0 (256 × devices)}
DATA (bin)
00000011
INTERNAL RESET PACKET
00000000
00000000
00000011
(00h [256 bits × n] + 03000003h)
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