3

Pin Information

PIN

NAME

TYPE

DESCRIPTION

1

NC

No connect

No connect. Leave floating.

2

PWMB

Output

PWMB is the active-high blue pulse width modulation output pin.

Tie it to the blue LED driver channel.

3

PWMG

Output

PWMG is the active-high green pulse width modulation output pin.

Tie it to the green LED driver channel.

4

PWMR

Output

PWMR is the active-high red pulse width modulation output pin.

Tie it to the red LED driver channel.

5

DGND

Ground

Tie to digital ground.

6

DGND

Ground

Tie to digital ground.

7

DVDD

Power

Digital power pin.

8

AGND

Ground

Tie to analog ground.

9

CLKIO

Output

CLKIO outputs a reference internal clock signal.

10

XRST

Input

Global, asynchronous, active low system reset.

When asserted low, XRST resets all registers.

Minimum reset pulse low is 10us and must be provided by external

circuitry.

11

SCLSLV

Input

SDASLV and SCLSLV are the serial interface communications pins.

SDASLV is the bidirectional data pin and SCLSLV is the interface clock.

A pull-up resistor should be tied to SDASLV because it goes tri-state to

output logic 1.

12

SDASLV

Input/Output

(tri-state high)

13

SCLPROM

Output

An external serial I2C EEPROM can be connected to the device to store

calibration and configuration data. SDAPROM and SCLPROM should be

tied to the I2C data (SDA) and clock (SCL) pins of the EEPROM. A pull-up

resistor should be tied to SDAPROM because it goes tri-state to output

logic 1.

14

SDAPROM

Input/Output

(tri-state high)

15

SLEEP

Input

When SLEEP=1, the device goes into sleep mode. In sleep mode, all

analog circuits are powered down and the clock signal is gated away from

the core logic resulting in very low current consumption.

16

AGND

Ground

Tie to analog ground.

17

AGND

Ground

Tie to analog ground.

18

AGND

Ground

Tie to analog ground.

19

AVDD

Power

Analog power pin.

20

NC

No connect

No connect. Leave floating.