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NXP Semiconductors
PCA9635
16-bit Fm+ I 2 C-bus LED driver
7.3 Register de?nitions
Table 4.
Register summary [1][2]
Register number (hex)
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15
16
17
18
19
1A
1B
D4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Name
MODE1
MODE2
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
PWM6
PWM7
PWM8
PWM9
PWM10
PWM11
PWM12
PWM13
PWM14
PWM15
GRPPWM
GRPFREQ
LEDOUT0
LEDOUT1
LEDOUT2
LEDOUT3
SUBADR1
SUBADR2
SUBADR3
ALLCALLADR
Type
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
Function
Mode register 1
Mode register 2
brightness control LED0
brightness control LED1
brightness control LED2
brightness control LED3
brightness control LED4
brightness control LED5
brightness control LED6
brightness control LED7
brightness control LED8
brightness control LED9
brightness control LED10
brightness control LED11
brightness control LED12
brightness control LED13
brightness control LED14
brightness control LED15
group duty cycle control
group frequency
LED output state 0
LED output state 1
LED output state 2
LED output state 3
I 2 C-bus subaddress 1
I 2 C-bus subaddress 2
I 2 C-bus subaddress 3
LED All Call I 2 C-bus address
[1]
[2]
Only D[4:0] = 0 0000 to 1 1011 are allowed and will be acknowledged. D[4:0] = 1 1100 to 1 1111 are reserved and will not be
acknowledged.
When writing to the Control register, bit 4 must be programmed with logic 0 for proper device operation.
PCA9635_7
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 07 — 16 July 2009
9 of 35
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