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FDI
PCA9633DEMO
User Manual
FDI
Overview
The PCA9633 Demo Board demonstrates the Philips PCA9633 Fast Mode Plus 4-bit I²C
LED Dimmer IC. Four LEDs are connected to the PCA9633 and through individual
pulse width modulation (PWM) of each LED show different levels of intensity.
To use, push SW8 to the ON position. The LEDs will immediately flash and glow. To
select a different mode of operation, press the MODE button (PB1). The LED will flash
amber a number of times to denote which mode was entered. Use the other 3 buttons
(SELECT, PLUS, & MINUS) to change the settings. Six different modes of operation
are provided and described below.
If the battery is low, the red LED will flash every 3 seconds.
Mode 1: Auto Demonstration Mode
First shows Mode 2 for 10 seconds, then shows Mode 3 for 10 seconds, and then
repeats.
MODE
SELECT
PLUS
MINUS
Next mode
Does nothing
Does nothing
Does nothing
Mode 2: Color Wash Mode
Goes through blends of different colors continuous.
MODE
SELECT
PLUS
MINUS
Next mode
Toggle between smooth transitions and sharp transitions.
Faster
Slower
Mode 3: Random Color Mode
Randomly shows different colors without blending transitions.
MODE
SELECT
PLUS
MINUS
Next mode
Toggle between two color sets, darker and lighter
Faster
Slower
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Rev 2
FDI
PCA9633DEMO
User Manual
FDI
Mode 4: User Color Mode
Allows the user to choose a color by selecting the amount of each LED’s PWM
output as well as the 5th group PWM that is used to dim or blink the combined
colors at the same time.
MODE
SELECT
PLUS
MINUS
Next mode
Select color PWM component: Red, Green, Blue, Amber,
or White (5th Group PWM) flashes as that PWM is
selected.
More of that color component
Less of that color component
Note: If the 5th Group PWM is set at minimum then no colors will be displayed
Mode 5: Multiple Card Chase Mode
Uses multiple cards and the group call feature of the PCA9633 to generate a chase
pattern of 2 (yellow/red), 3 (yellow/red/green), or 4 (yellow/red/green/blue) colors
for up to 8 boards (master plus seven slave boards) connected via the RJ45 jacks.
MODE
SELECT
PLUS
MINUS
Next mode
Chooses a 2, 3, or 4 color chase pattern.
Faster blinking
Slower blinking
Mode 6: Output Enable Control Mode
Demonstrates the /Output Enable control pin input that Hi-Zs the LED outputs.
This mode changes the LED diffuser color to purple and blinks all LEDs at the
same rate.
MODE
SELECT
PLUS
MINUS
Next mode
Selects frequency (duty cycle fixed at 50%/50%) or duty
cycle (frequency fixed at XX)
Faster frequency (doubles each push) or longer ON duty
cycle
Slower frequency (halves each push) or shorter ON duty
cycle
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Rev 2
FDI
PCA9633DEMO
User Manual
FDI
Switch Layout
Switch
1
2
3
4
5
6
7
8
Function
Board Address 0
1<>0
Board Address 1
1<>0
Board Address 2
1<>0
Cable LED OEn
N<>Y
Bus SDA Pull-up Enable N<>Y
Bus SCL Pull-up Enable N<>Y
Cable Power Off/On Off/On
Board Power Off/On Off/On
Description
Board Address input to CPU and PCA9633
Board Address input to CPU and PCA9633
Board Address input to CPU and PCA9633
Connect the OEn of the PCA9633 to the cable
Enable Pull-up of the SDA signal on the cable
Enable Pull-up of the SCL signal on the cable
Connect the battery to the cable
Board power control
Switch Details
Board Address
SW3
ON
SW2 SW1
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
Board Description
0
Master (default)
1
2
3
4
5
6
7
Notes
There must be one and only
one master board set
Slave 1
Slave 2
Slave 3
Slave 4
Slave 5
Slave 6
Slave 7
The MASTER board should be at one end of the Ethernet cable for proper operation of
the I²C-bus. Subsequent SLAVE boards are not required to be in any certain order. Also,
there may be gaps in the SLAVE board addresses (e.g., it is possible to have SLAVE
Boards 2, 4, 6 and no SLAVE Board 3 or 5).
Cable LED OEn
This switch connects the OEn of the PCA9633 to pin 6 of RJ45 cable so that the master
board can control the PCA9633 /OE pin on each slave board. This MUST be set to ON
for proper operation.
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121905.doc
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Rev 2
FDI
PCA9633DEMO
User Manual
FDI
Bus SDA & SCL Pull-up Enable
These two switches disable/enable the cable-side pull-ups for the I²C-bus. These switches
must be ON for the MASTER Board (0) and the LAST SLAVE board in the chain. All
other boards in-between should have these switches set to OFF. If there are only two
boards connected (MASTER and SLAVE), both boards should have these switches set to
ON.
Cable Power Off/On
This switch enables the battery power connection to the RJ45 cable on pin 1 of the RJ45
jack. This allows a single power source for the complete chain of boards when all the
boards have this switch ON. Note: When this is utilized, a single bench or wall power
supply should be used, as the typical 9V battery cannot supply enough current to power
multiple boards. The 9V battery should be removed from the holder on all boards.
The input power requirements are: 6VDC to 12VDC, 100mA per board MAX.
Board Power Off/On
This switch turns power OFF/ON for the board. Board Power should be turned OFF
whenever the board is not in use, as the battery drain would result in a dead battery.
It is also recommended to remove the battery from the board when not in use to avoid
inadvertent battery drain if the OFF/ON switch is bumped ON. The battery may be
placed in the holder with the contacts “away” from each other as a storage method.
H:\Philips\PCA9633DEMO\DOCs\PCA9633 Demo Board User Manual
121905.doc
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Rev 2
FDI
PCA9633DEMO
User Manual
FDI
Power Connectivity
The PCA9633DEMO Board requires input power of 6VDC to 9VDC at 100mA. This
power may be supplied via the 9V battery holder, or via the external power connector, J2.
Extreme care should be taken when connecting and external power source to the board to
insure proper polarity.
Off-Board LED Drivers
The PCA9633DEMO Board includes high-current FET drivers for off-board LED
circuitry. These devices, Q1-Q4, and capable of switching up to 60V @ 300mA. The part
number utilized is BSH112 from Philips Semiconductors. These outputs are connected to
solder pads L1 – L4 with adjacent 5V and GND connections. They are connected as “low
side” switches to ground configuration.
H:\Philips\PCA9633DEMO\DOCs\PCA9633 Demo Board User Manual
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Rev 2
FDI
V5V
V5V
J2
CON1
RJ45
8
7
6
5
4
3
2
1
RP1
10K 8-ISO
D1
3
D2
2
CLEDONn
RSDA
RSCL
SWBAT
VCC
V5V
C1
0.1UF
VCC
OFF<>ON
1<>0
1<>0
1<>0
BFRPWR
SCL
RSCL
BAT54A T/R
V5V
1
2
3
4
5
6
8
CLEDONn
RSDA
RSCL
SWBAT
1
8
2 SX VCC 7
3 RX SY 6
4 TX RY 5
GND TY
S1
1
2
3
4
5
6
7
8
VIN1
8
CON2
7
6
5
4
3
2
1
RJ45
RSDA
RSCL
LEDONn
RSDA
RSCL
V5V
V5V
16
15
14
13
12
11
10
9
U2
VDD
A6
A5
SDA
SCL
A4
OE
VSS
SDA
SCL
A0
A1
LED0
LED1
LED2
LED3
A2
A3
PCA9633PW
TSSOP16
1
2
3
4
5
6
7
8
R8
1K
SEL1
SEL2
L1
L2
L3
L4
SEL3
R7
1K
VCC VCC
LED DRIVER
I2C ADDR = 0xCX
U6
8
1
7 VDD LED0 2
6 SDA LED1 3
5 SCL LED2 4
GND LED3
PCA9633TK, DNL
HVSON8
R9 33
R10 33
V5V
VCC
3.3V REGULATOR
TDA3663ATD-T
SO8
U5
8
1
7 VP REG 2
6 GND GND 3
5 GND GND 4
NC5 NC4
5.0V REGULATOR
TDA3664TTD-T
TSSOP8-SOT505-1
U4
8
1
7 VP REG 2
6 NC7 NC2 3
5 NC6 GND 4
NC5 NC4
I2C ADDR = 0xC4
ALT LED DRIVER
VIN1
+ C10
10UF,16V
V5V
VIN2
+ C9
10UF,16V
1
7
1 SEL1
16
2 SEL2
15
3 SEL3
14
4 LEDONn 13
12
11
10
9
SW DIP-8
VIN2
BAT54A T/R
8
U3
2
7
6
5
4
3
2
1
SDA
RSDA
I2C BUFFER
P82B96DP
TSSOP8-SOT505-1
1
SW1 BOARD ADDRESS 0
SW2 BOARD ADDRESS 1
SW3 BOARD ADDRESS 2
SW4 CABLE LED PWM ENABLE
SW5 BUS RSDA PULLUP ENABLE
SW6 BUS RSCL PULLUP ENABLE
SW7 BUS POWER CONNECT
SW8 BOARD POWER OFF/ON
VCC
8
7
6
5
R1 1K
R2 1K
2
1
1
2
CON 2PIN, DNL
BH1
BH BC9VPC
INPUT POWER
+ C4
+ C11
10UF,16V
10UF,16V
SEL3
SEL1
SEL2
RSTn
U1
LED2 LED, GREEN
LED1 LED, RED
1
2
3
4
5
6
7
8
9
10
P0.1/CIN2B/KBI1
P0.2/CIN2A/KBI2
P0.3/CIN1B/KBI3
P0.4/CIN1A/KBI4
P0.5/CMPREF/KBI5
VDD
P0.6/CMP1/KBI6
P0.7/T1/KBI7
P1.0/TXD
P1.1/RXD
P89LPC925FDH
TSSOP20
KBI0/CMP2/P0.0
P1.7
P1.6
RST/P1.5
VSS
XTAL1/P3.1
CLKOUT/XTAL2/P3.0
INT/P1.4
SDA/INT0/P1.3
SCL/T0/P1.2
180
LED3 LED, BLUE
J1
2
4
6
8
10
VCC
20
19
18
17
16
15
14
13
12
11
Z1
VCC
C7
VCC
MINUS
L2
L1
MODE
LEDONn
TXD
RXD
PLUS
SEL
VBMON
PDA
PCL
0.1UF
C6
0.1UF
VCC
RXD
PDA
RSTn
DIFFUSER AT4132JB
MICROPROCESSOR
130
V5V
R3
75
1
3
5
7
9
LED4 LED, AMBER
R4
160
R5
R6
SCL
PCL
SDA
TXD
HEADER5X2 2MM
0.1UF
C8
V5V
ICP HEADER
C5
V5V
0.1UF
1
1
Title
Size
2 PB4
3
1
4
SW KEY-SPST
2 PB3
3
1
4
SW KEY-SPST
2 PB2
3
1
4
SW KEY-SPST
2 PB1
3
10K 8-ISO
8
7
6
5
1
4
SW KEY-SPST
VCC
RP2
1
2
3
4
OPTIONAL BATTERY
VOLTAGE MONITORING
USING ADC OF LPC925
1
V5V
MINUS
PLUS
SEL
2
MODE
TP5
of
Q4
BSH112
Q3
BSH112
R12
100K 1%
R11
200K 1%
VIN1
TP3
L3
TP1
Q1
BSH112
1
TP4
L4
TP2
Q2
BSH112
TP6
Huntsville, AL
Sheet
Future Designs, Inc.
PCA9633 Demo Board
Friday , December 09, 2005
Document Number
PCA9633DEMO
1
OFF-BOARD LED DRIVERS
Date:
Rev
2
Rev 2
Page 6 of 6
H:\Philips\PCA9633DEMO\DOCs\PCA9633 Demo Board User Manual
121905.doc
3
+ C2
+ C3
10UF,16V
10UF,16V
2
3
3
2
2
3
3
2
FDI
PCA9633DEMO
User Manual
Demo Board Schematics