LM3559 datasheet(34/50 Pages) TI1

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LM3559

SNVS624B – JUNE 2011 – REVISED JUNE 2016

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Table 14. Privacy Register

Bit 7

(Blink 2)

Bit 6

(Blink 1)

Bit 5

(LED2 Privacy)

Bit 4

(LED1 Privacy)

Bit 3

(Privacy

Terminate)

Bit 2 (PD2)

Bit 1 (PD1)

Bit 0 (PD0)

00 = No blinking

01 = 128 ms blink period

(default)

10 = 256 ms blink period

11 = 512 ms blink period

0 = LED2 is off

for privacy

mode (default)

1 = LED2 is on

for privacy

mode

0 = LED1 is off

for privacy

mode

1 = LED1 is on

for privacy

mode (default)

0 = Privacy

mode turns

back on at the

end of the flash

pulse

1 = Privacy

mode turns off

at the end of

the flash pulse

(default)

Privacy mode current levels (% of minimum torch

current)

000 = 10% (default)

001 = 20%

010 = 30%

011 = 40%

100 = 50%

101 = 60%

110 = 70%

111 = 80%

8.6.14 Privacy PWM Period Register

The Privacy PWM Register contains the bits to control the PWM period for the privacy indicate mode (see

Table 15).

Table 15. Privacy PWM Period Register

Bits 7-3

(Not Used)

Bit 2

(P3)

Bit 1

(P2)

Bit 0

(P1)

000 = 5.12 ms

001 = 2.56 ms

010 = 1.28 ms

011 = 640 µs

1XX = 320 µs

8.6.15

Indicator Register

The Message Indicator Register contain the bits which control the following:

1. Indicator current level

2. Pulse width

3. Ramp times for turnon and turnoff of the indicator current source (see Figure 42 for the message indicator

timing diagram).

Table 16. Indicator Register

Bit 7 (R2)

Bit 6 (R1)

Bit 5 (P3)

Bit 4 (P2)

Bit 3 (P1)

Bit 2 (I3)

Bit 1 (I2)

Bit 0 (I1)

(tRAMP)

00 = 78 ms (default)

01 = 156 ms

10 = 312 ms

11 = 624 ms

(PERIOD#)

000 = 0 (default)

001 = 1

010 = 2

011 = 3

100 = 4

101 = 5

110 = 6

111 = 7

(IIND)

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

8.6.16 Indicator Blinking Register

The Indicator Blinking Register contain the bits which control the following:

1. Number of periods (tPERIOD = tRAMP × 2 + tPULSE × 2)

2. Active Time (tACTIVE = tPERIOD × PERIOD# )

3. Blank Time (tBLANK = tACTIVE × BLANK#)

–

(see Figure 42)

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