LM3560 Datasheet, PDF (27/42 Pages) Texas Instruments – LM3560 Synchronous Boost Flash Driver w/ Dual 1A High-Side Current Sources (2A Total Flash Current)

PRIVACY REGISTER (Address 0x11)
The Privacy Register contains the bits that control which cur-
rent source is used for the privacy indicator (LED1 or LED2
or both), whether the privacy indicator turns off or remains on
after the flash pulse terminates, and the duty cycle settings
(between 10% and 80%) for setting the average privacy LED
current (see Table 4 ).
TABLE 4. Privacy Register
Bit 7
(Blink 2)
Bit 6
(Blink 1)
t_BLINK
00 = No Blinking
01 = 128 ms Blink Period
(Default)
10 = 256 ms Blink Period
11 = 512 ms Blink Period
Bit 5
Bit 4
Bit 3
Bit 2 (PD2) Bit 1 (PD1) Bit 0 (PD0)
(LED2
(LED1
(Privacy
Privacy)
Privacy)
Terminate)
0 = LED2 is off 0 = LED1 is off 0 = Privacy Privacy mode current levels (% of minimum or
for privacy
mode
for privacy
mode
mode turns maximum torch current, depending on bit [2] of
back on at the Enable Register)
(Default)
1 = LED1 is on end of the
000 = 10% (Default)
1 = LED2 is on for privacy
for privacy mode
flash pulse
1 = Privacy
001 = 20%
010 = 30%
mode
(Default)
mode remains 011 = 40%
off at the end 100 = 50%
of the flash 101 = 60%
pulse
110 = 70%
(Default)
111 = 80%
INDICATOR REGISTER (Address 0x12)
The Indicator Register contains the bits which control the fol-
lowing:
1. Indicator current level
2. Pulse width
3. Ramp times for turn-on and turn-off of the indicator
current source (see Figure 20 for the message indicator
timing diagram).
TABLE 5. Indicator Register
Bit 7 (R2) Bit 6 (R1)
(t_R and t_F)
00 = 78 ms (default)
01 = 156 ms
10 = 312 ms
11 = 624 ms
Bit 5 (P3) Bit 4 (P2)
(PERIOD#)
000 = 0 (default)
001 = 1
010 = 2
011 = 3
100 = 4
101 = 5
110 = 6
111 = 7
Bit 3 (P1)
Bit 2 (I3)
Bit 1 (I2)
(I_IND)
000 = 2.25 mA (default)
001 = 4.5 mA
010 = 6.75 mA
011 = 9 mA
100 = 11.25 mA
101 = 13.5 mA
110 = 15.75 mA
111 = 18 mA
Bit 0 (I1)
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