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TLC59291 Arkusz danych(PDF) 34 Page - Texas Instruments |
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TLC59291 Arkusz danych(HTML) 34 Page - Texas Instruments |
34 / 45 page TLC59291 SLVSA96 – SEPTEMBER 2015 www.ti.com 8.5.1.6 Function Control (FC) Data The FC data latch is 16 bits long and is used to adjust output current values for LED brightness, select the SID, BLANK mode select, the output current for IDM, the output on time for IDM, and power-save mode enable/disable. When the IC is powered on, the control data latch is set to the default value (E67Fh).The control data latch truth tables are shown in Table 9 through Table 14. Table 9. Global Brightness Control (BC) Truth Table BCALL (BIT 6:0) Brightness Control for all Output with Output Current 0000000 Output current of OUTn is set to IO(LCmax) × 0% 0000001 IO(LCmax) × 0.8% ∙ ∙ ∙ ∙ ∙ ∙ 1111110 IO(LCmax) × 99.2% 1111111 IO(LCmax) × 100% Table 10. SID Load Control Truth Table SIDLD SID LOADED TO THE COMMON SHIFT REGISTER BIT 8 BIT 7 0 0 No data is loaded (default value) 0 1 LED open detection (LOD) or thermal error flag (TEF) data are loaded 1 0 LED short detection (LSD) or pre-thermal warning (PTW) data are loaded 1 1 Output leakage detection (OLD) or IREF pin short flag (ISF) data are loaded Table 11. BLANK Mode Selection Table BLKMS (BIT 9) BLANK MODE SELECTION 0 SOUT mode, BLANK pin worked as SOUT 8/16 select signal (default) 1 Enable mode, BLANK pin worked as OUTPUT enable Table 12. LSD Threshold Voltage Truth Table LSDVLT (BIT 10) LED SHORT DETECTION (LSD) THRESHOLD VOLTAGE 0 VLSD0 (0.35 × VCC typ) 1 VLSD3 (0.65 × VCC typ, default value) Table 13. Current Select for IDM IDMCUR SINK CURRENT AT OUTn FOR INVISIBLE DETECTION MODE (IDM) BIT 12 BIT 11 0 0 IDM is disabled (default value) 0 1 2 µA (typ) 1 0 10 µA (typ) 1 1 20 µA (typ) Table 14. IDM Work-Time Truth Table IDMTIM INVISIBLE DETECTION MODE (IDM) WORKING TIME BIT 14 BIT 13 0 0 All outputs are turned on for 17 OSC clocks (0.85 µs typ) 0 1 All outputs are turned on for 33 OSC clocks (1.65 µs typ) 1 0 All outputs are turned on for 65 OSC clocks (3.25 µs typ) 1 1 All outputs are turned on for 129 OSC clocks (6.45 µs tyicalp, default value) 34 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Product Folder Links: TLC59291 |
Podobny numer części - TLC59291_15 |
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Podobny opis - TLC59291_15 |
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