LM3560 Datasheet, PDF (26/42 Pages) Texas Instruments – LM3560 Synchronous Boost Flash Driver w/ Dual 1A High-Side Current Sources (2A Total Flash Current)

ENABLE REGISTER (Address 0x10)
Bits [1:0] of the Enable Register controls the on/off state of
Torch mode, Flash mode, and Privacy Indicate mode. Bit 2
selects the peak current setting for Privacy Indicate mode
(max or min torch current). Bits [4:3] turn on/off the main cur-
rent sources (LED1 and LED2). Bit [5] sets the level or edge
control for the STROBE input. Bits 7 and 6 control the Indi-
cator current source (see Table 3).
TABLE 3. Enable Register Descriptions
Bit 7
(EN Blink)
Bit 6
(EN
Message
Indicator)
Bit 5
(STROBE
Level/Edge)
Bit 4
(LED2
ENABLE)
0 = Message 0 = Message 0 = (Level Sensitive) 0 = LED2 off
Indicator
Indicator is When STROBE goes 1 = LED2 on
Blinking
disabled
high, the Flash current (default)
Function is (Default) will turn on and remain
disabled (See 1= Message on for the duration the
Note below). Indicator is STROBE pin is held
(default)
enabled.
high or when the Flash
1 = Message
Timeout occurs,
Indicator
whichever comes first.
Blinking
(default)
Function is
1 = (Edge Triggered)
enabled. The
When STROBE goes
message
high, the Flash current
indicator
will turn on and remain
blinks the
on for the duration of
pattern
the Flash Time-out.
programmed
in the
Indicator
Register and
Indicator
Blinking
Register
Bit 3
(LED1
Enable)
0 = LED1 off
1 = LED1 on
(default)
Bit 2
(Privacy
Mode Peak
Bit 1
(EN1)
Bit 0
(EN0)
Current
Setting)
0 = 31.25mA Enable Bits
(default) 00 = Current Sources are
1 = 250 mA Shutdown (default)
01 = Privacy Indicator Mode
10 = Torch Mode
11 = Flash Mode (bits reset
at timeout)
NOTE: Bit 7 Enables/Disables the Message Indicator Blinking Function. With this bit set to 0 and Bit 6 set to 1, the Message Indicator turns on constantly at the
programmed current as set in Indicator Register bits [2:0].
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