PCA9622_12 Datasheet, PDF (19/39 Pages) NXP Semiconductors – 16-bit Fm+ I2C-bus 100 mA 40 V LED driver

NXP Semiconductors
9. Bus transactions
PCA9622
16-bit Fm+ I²C-bus 100 mA 40 V LED driver
slave address
control register
data for register D[4:0]⁽¹⁾
S A6 A5 A4 A3 A2 A1 A0 0 A X X X D4 D3 D2 D1 D0 A
START condition
Auto-Increment options
R/W
Auto-Increment flag
acknowledge
from slave
acknowledge
from slave
AP
acknowledge
from slave
STOP
condition
002aac148
(1) See Table 4 for register definition.
Fig 11. Write to a specific register
slave address
control register
MODE1 register
S A6 A5 A4 A3 A2 A1 A0 0 A 1 0 0 0 0 0 0 0 A
A
START condition
R/W
acknowledge
from slave
Auto-Increment MODE1
on all registers register
selection
Auto-Increment on
acknowledge
from slave
SUBADR3 register
ALLCALLADR register
(cont.)
A
AP
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
STOP
condition
Fig 12. Write to all registers using the Auto-Increment feature
MODE2 register
A ^(cont.)
acknowledge
from slave
002aac149
slave address
control register
PWM0 register
S A6 A5 A4 A3 A2 A1 A0 0 A 1 0 1 0 0 0 1 0 A
A
START condition
R/W
acknowledge
from slave
PWM14 register
increment
on Individual
brightness
registers only
PWM0
register
selection
Auto-Increment on
PWM15 register
acknowledge
from slave
acknowledge
from slave
PWM0 register
(cont.)
A
A
A
PWM1 register
A ^(cont.)
acknowledge
from slave
PWMx register
AP
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
acknowledge
from slave
STOP
condition
002aac150
Fig 13. Multiple writes to Individual Brightness registers only using the Auto-Increment feature
PCA9622
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 6 September 2012
© NXP B.V. 2012. All rights reserved.
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