MP3313 Rev.1.0

www.MonolithicPower.com

22

8/2/2017

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Table 13: Flash Mode Control Register

Addr: 0x17

Bit

Bit Name

Access

Default

Description

7:4

FL_T

r/w

0101

(300ms)

Flash time set register. 50ms/step.

0000: 50ms

0001: 100ms

....

1111: 800ms

3:1

N/A

r

000

Reserved.

0

FL_EN

r/w

0

Backlight flash mode enable bit.

0: disable

1: enable

Automatically resets to 0 when flash timeout or protection is triggered.

Table 14: Brightness Register LSB

Addr: 0x18

Bit

Bit Name

Access

Default

Description

7:3

N/A

r

N/A

Reserved.

2:0

BRT2:0

r/w

111

3-bit LSB of the brightness register.

Table 15: Brightness Register MSB

Addr: 0x19

Bit

Bit Name

Access

Default

Description

7:0

BRT10:3

r/w

11111111

8-bit MSB of the brightness register.

Table 16: Fault Control Register

Addr: 0x1E

Bit

Bit Name

Access

Default

Description

7:6

S_TH

r/w

01

LED short-protection threshold setting. If the LEDx voltage is higher

than the threshold, short protection is triggered.

00: 2V

01: 3V

10: 5V

11: reserved

5:4

SLP_MD

r/w

00

LED short protection mode selection.

00: LED short protection is disabled

01: FT_SLP is set when a fault is detected

10: FT_SLP is set and the fault string is marked off

11: FT_SLP is set and the IC latches off

3:2

OVP_MD

r/w

00

Over-voltage protection mode selection.

00: FT_OVP is set when a fault is detected

01: FT_OVP is set and the open string is marked off

10: FT_OVP is set and the IC latches off

11: reserved

1

OTP_SD

r/w

1

Thermal shutdown latch off disable bit.

0: IC latches off when OTP is triggered

1: no latch off

0

OCP_SD

r/w

1

Over-current protection latch off disable bit.

0: IC latches off when OCP is triggered

1: no latch off