pca9552bs NXP Semiconductors, pca9552bs Datasheet - Page 6

• Manufacturer Part Number: pca9552bs
• Description: 16-bit I2c Led Driver With Programmable Blink Rates
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PCA9552_5
Product data sheet
6.2.1 Control Register definition
6.3.1 INPUT0 - Input register 0
6.3.2 INPUT1 - Input register 1
6.3 Register descriptions
Table 3:
The Input register 0 reflects the state of the device pins (inputs LED0 to LED7). Writes to
this register will be acknowledged but will have no effect.
Table 4:
Remark: The default value ‘X’ is determined by the externally applied logic level (normally
logic 1) when used for directly driving LED with pull-up to V
The Input register 1 reflects the state of the device pins (inputs LED8 to LED15). Writes to
this register will be acknowledged but will have no effect.
Table 5:
Remark: The default value ‘X’ is determined by the externally applied logic level (normally
logic 1) when used for directly driving LED with pull-up to V
B3
0
0
0
0
0
0
0
0
1
1
Bit
Symbol
Default
Bit
Symbol
Default
B2
0
0
0
0
1
1
1
1
0
0
Register summary
INPUT0 - input register 0 description
INPUT1 - input register 1 description
LED15
LED7
B1
0
0
1
1
0
0
1
1
0
0
X
X
7
7
B0
0
1
0
1
0
1
0
1
0
1
LED14
LED6
Rev. 05 — 9 March 2006
X
X
6
6
Symbol
INPUT0
INPUT1
PSC0
PWM0
PSC1
PWM1
LS0
LS1
LS2
LS3
16-bit I
LED13
LED5
X
X
5
5
2
Access
read only
read only
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
C-bus LED driver with programmable blink rates
LED12
LED4
X
X
4
4
LED11
Description
input register 0
input register 1
frequency prescaler 0
PWM register 0
frequency prescaler 1
PWM register 1
LED0 to LED3 selector
LED4 to LED7 selector
LED8 to LED11 selector
LED12 to LED15 selector
LED3
X
X
3
3
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
DD
DD
.
LED10
.
LED2
X
X
2
2
PCA9552
LED1
LED9
X
X
1
1
LED0
LED8
6 of 28
X
X
0
0