pca9632 NXP Semiconductors, pca9632 Datasheet - Page 8

• Manufacturer Part Number: pca9632
• Description: Pca9632 4-bit Fm I?c-bus Low Power Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 4.
[1]
[2]
Table 5.
Legend: * default value.
[1]
[2]
PCA9632_1
Objective data sheet
Register number (hex)
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
Bit
7
6
5
4
3
2
1
0
Only D[3:0] = 0000 to 1100 are allowed and will be acknowledged. D[3:0] = 1101, 1110, or 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.
It takes 500 s max. for the oscillator to be up and running once SLEEP bit has been set to logic 1. Timings on LEDn outputs are not
guaranteed if PWMx, GRPPWM or GRPFREQ registers are accessed within the 500 s window.
No blinking or dimming is possible when the oscillator is off.
Symbol
AI2
AI1
AI0
SLEEP
SUB1
SUB2
SUB3
ALLCALL
Register summary
MODE1 - Mode register 1 (address 00h) bit description
7.3.1 Mode register 1, MODE1
7.3 Register definitions
Access
read only
read only
read only
R/W
R/W
R/W
R/W
R/W
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
[1][2]
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
Value
0
1*
0*
1
0*
1
0
1*
0*
1
0*
1
0*
1
0
1*
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
Rev. 01 — 28 September 2007
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
Description
Register Auto-Increment disabled
Register Auto-Increment enabled
Auto-Increment bit 1 = 0
Auto-Increment bit 1 = 1
Auto-Increment bit 0 = 0
Auto-Increment bit 0 = 1
Normal mode
Low power mode. Oscillator off
PCA9632 does not respond to I
PCA9632 responds to I
PCA9632 does not respond to I
PCA9632 responds to I
PCA9632 does not respond to I
PCA9632 responds to I
PCA9632 does not respond to LED All Call I
PCA9632 responds to LED All Call I
Name
MODE1
MODE2
PWM0
PWM1
PWM2
PWM3
GRPPWM
GRPFREQ
LEDOUT
SUBADR1
SUBADR2
SUBADR3
ALLCALLADR
[1]
.
2
2
2
C-bus subaddress 1.
C-bus subaddress 2.
C-bus subaddress 3.
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
4-bit Fm+ I
[2]
2
2
2
C-bus subaddress 1.
C-bus subaddress 2.
C-bus subaddress 3.
.
2
C-bus address.
2
C-bus low power LED driver
Function
Mode register 1
Mode register 2
brightness control LED0
brightness control LED1
brightness control LED2
brightness control LED3
group duty cycle control
group frequency
LED output state
I
I
I
LED All Call I
2
2
2
C-bus subaddress 1
C-bus subaddress 2
C-bus subaddress 3
2
C-bus address.
PCA9632
© NXP B.V. 2007. All rights reserved.
2
C-bus address
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