PCA9625 datasheet(13/33 Pages) NXP

13 / 33 page

PCA9625_2

Product data sheet

Rev. 02 — 15 January 2008

13 of 33

NXP Semiconductors

PCA9625

16-bit Fm+ I2C-bus 100 mA 24 V LED driver

7.3.6 LEDOUT0 to LEDOUT3, LED driver output state

LDRx = 00 — LED driver x is off (default power-up state).

LDRx = 01 — LED driver x is fully on (individual brightness and group dimming/blinking

not controlled).

LDRx = 10 — LED driver x individual brightness can be controlled through its PWMx

LDRx = 11 — LED driver x individual brightness and group dimming/blinking can be

controlled through its PWMx register and the GRPPWM registers.

7.3.7 SUBADR1 to SUBADR3, I2C-bus subaddress 1 to 3

Subaddresses are programmable through the I2C-bus. Default power-up values are E2h,

E4h, E8h, and the device(s) will not acknowledge these addresses right after power-up

(the corresponding SUBx bit in MODE1 register is equal to 0).

Table 10.

LEDOUT0 to LEDOUT3 - LED driver output state register (address 14h to 17h) bit

description

Legend: * default value.

Address

Bit

Symbol

Access

Value

Description

14h

LEDOUT0

7:6

LDR3

R/W

00*

LED3 output state control

5:4

LDR2

R/W

00*

LED2 output state control

3:2

LDR1

R/W

00*

LED1 output state control

1:0

LDR0

R/W

00*

LED0 output state control

15h

LEDOUT1

7:6

LDR7

R/W

00*

LED7 output state control

5:4

LDR6

R/W

00*

LED6 output state control

3:2

LDR5

R/W

00*

LED5 output state control

1:0

LDR4

R/W

00*

LED4 output state control

16h

LEDOUT2

7:6

LDR11

R/W

00*

LED11 output state control

5:4

LDR10

R/W

00*

LED10 output state control

3:2

LDR9

R/W

00*

LED9 output state control

1:0

LDR8

R/W

00*

LED8 output state control

17h

LEDOUT3

7:6

LDR15

R/W

00*

LED15 output state control

5:4

LDR14

R/W

00*

LED14 output state control

3:2

LDR13

R/W

00*

LED13 output state control

1:0

LDR12

R/W

00*

LED12 output state control

Table 11.

SUBADR1 to SUBADR3 - I2C-bus subaddress registers 0 to 3 (address 18h to

1Ah) bit description

Legend: * default value.

Address

Bit

Symbol

Access

Value

Description

18h

SUBADR1

7:1

A1[7:1]

R/W

1110 001*

I2C-bus subaddress 1

A1[0]

R only

reserved

19h

SUBADR2

7:1

A2[7:1]

R/W

1110 010*

I2C-bus subaddress 2

A2[0]

R only

reserved

1Ah

SUBADR3

7:1

A3[7:1]

R/W

1110 100*

I2C-bus subaddress 3

A3[0]

R only

reserved

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