pca9635 NXP Semiconductors, pca9635 Datasheet - Page 13

• Manufacturer Part Number: pca9635
• Description: Pca9635 16-bit Fm I2c-bus Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA9635_5
Product data sheet
7.3.5 GRPFREQ, group frequency
7.3.6 LEDOUT0 to LEDOUT3, LED driver output state
Table 9.
Legend: * default value.
GRPFREQ is used to program the global blinking period when DMBLNK bit (MODE2
register) is equal to 1. Value in this register is a ‘Don’t care’ when DMBLNK = 0.
Applicable to LED outputs programmed with LDRx = 11 (LEDOUT0 to LEDOUT3
registers).
Blinking period is controlled through 256 linear steps from 00h (41 ms, frequency 24 Hz)
to FFh (10.73 s).
Table 10.
Legend: * default value.
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
register.
LDRx = 11 — LED driver x individual brightness and group dimming/blinking can be
controlled through its PWMx register and the GRPPWM registers.
global blinking period
Address
13h
Address
14h
15h
16h
17h
GRPFREQ - Group Frequency register (address 13h) bit description
Register
GRPFREQ
LEDOUT0 to LEDOUT3 - LED driver output state register (address 14h to 17h) bit
description
Register
LEDOUT0
LEDOUT1
LEDOUT2
LEDOUT3
Rev. 05 — 22 March 2007
Bit
7:0
Bit
7:6
5:4
3:2
1:0
7:6
5:4
3:2
1:0
7:6
5:4
3:2
1:0
7:6
5:4
3:2
1:0
=
GFRQ 7:0
--------------------------------------- -
Symbol
GFRQ[7:0]
Symbol
LDR3
LDR2
LDR1
LDR0
LDR7
LDR6
LDR5
LDR4
LDR11
LDR10
LDR9
LDR8
LDR15
LDR14
LDR13
LDR12
24
+
1
Access Value
R/W
Access Value
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
(s)
0000 0000* GRPFREQ register
00*
00*
00*
00*
00*
00*
00*
00*
00*
00*
00*
00*
00*
00*
00*
00*
16-bit Fm+ I
Description
Description
LED3 output state control
LED2 output state control
LED1 output state control
LED0 output state control
LED7 output state control
LED6 output state control
LED5 output state control
LED4 output state control
LED11 output state control
LED10 output state control
LED9 output state control
LED8 output state control
LED15 output state control
LED14 output state control
LED13 output state control
LED12 output state control
PCA9635
2
© NXP B.V. 2007. All rights reserved.
C-bus LED driver
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