UM10323
PCA9600 demonstration board OM6293
Rev. 01 — 15 December 2008
User manual
Document information
Info
Keywords
Abstract
Content
I2C, bus buffer, twisted pair
The OM6293 is an add-on to NXP Semiconductors I2C 2005-1 demo board.
This daughter board makes it easy to test and design with the PCA9600, a
dual bidirectional bus buffer.
NXP Semiconductors
UM10323
PCA9600 demonstration board OM6293
Revision history
Rev
01
Date
20081215
Description
user manual; initial release
Contact information
For more information, please visit:
http://www.nxp.com
For sales office addresses, please send an email to:
salesaddresses@nxp.com
UM10323_1
© NXP B.V. 2008. All rights reserved.
User manual
Rev. 01 — 15 December 2008
2 of 9
NXP Semiconductors
UM10323
PCA9600 demonstration board OM6293
1. Introduction
The OM6293 evaluation board features RJ45 jacks for easy setup and demonstration of
the bus buffer capabilities of the PCA9600. It can be easily connected to other boards with
off-the-shelf telephone or networking twisted pair wires.
The IC communicates to the host via the I
2
C-bus/SMBus port and extends the buses’
capacitive handling, increases the current handling, extends the range, and/or allows
I
2
C-bus signaling via differential bus hardware.
2. Features
•
A complete evaluation platform for the PCA9600
•
Easy to integrate daughter card
•
Convenient test point for easy scope measurements and signal access
3. Getting started
3.1 Assumptions
Familiarity with the I
2
C-bus is recommended. It is also recommended that the user read
Application Note AN10658,
which covers other design considerations such as timing
delays, maximum data transmission speeds, handling ground potential differences and
designing for extreme ESD requirements.
3.2 Static handling requirements
CAUTION
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
during transport and handling. You must use a ground strap or touch the PC case or other
grounded source before unpacking or handling the hardware.
3.3 System requirements
The OM6293 daughter card can be used with the Windows based OM6275 I2C 2005-1
demo board, the microcontroller-based OM6299 industrial reference design board, or
stand-alone in the user’s application.
3.4 Power supply
When connected to the OM6275 I2C 2005-1 demo board or the OM6299 industrial
reference design board, the OM6293 can draw power from the host board through the
5 V pin on connector 3 (CON3).
An external power supply can also be used to power the board at location J1. The external
power supply can range from 2.5 V to 15 V.
UM10323_1
© NXP B.V. 2008. All rights reserved.
User manual
Rev. 01 — 15 December 2008
3 of 9
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User manual
Rev. 01 — 15 December 2008
1
2
3
4
5
6
7
8
9
CON3
© NXP B.V. 2008. All rights reserved.
UM10323_1
4. Schematic
NXP Semiconductors
CON4
1
2
3
4
5
6
7
8
9
V
CC
5V
1 n.c.
2 5V
3 VCC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
CON1
1
2
3
4
5
6
7
8
R1
2.7 kΩ
R2
2.7 kΩ
J1
R3
Axial
R4
R7
Axial
R8
R5
150R
R9
150R
V
CC
8
PCA9600
Sx
Sx 1
3 Tx
2 Rx
Sy
Sy 7
5 Ty
Tx
Rx
Ty
R10
1 kΩ
R6
1 kΩ
1
3
6 Ry
GND
GND
4
IC1
Sx
Rx
Tx
GND
J2
1
2
3
4
8
7
6
5
V
CC
Sy
Ry
Ty
2
Ry
4
V
CC
CON2
1
2
3
4
5
6
7
8
002aae284
PCA9600 demonstration board OM6293
V
CC
C1
100 nF
D1
Axial
D2
BZX84C15
D3A
BAT54A
D4
Axial
D5
BZX84C15
D3B
BAT54A
UM10323
4 of 9
Fig 1.
OM6293 PCA9600 evaluation board
NXP Semiconductors
UM10323
PCA9600 demonstration board OM6293
Fig 2.
OM6293 fitted to the 9-pin header on OM6275 I2C 2005-1
5. Bill of materials
Table 1.
Part type
2.54 mm 4×2 way header
Molex 22-28-6270
Molex 22-15-2096
Bill of materials
Designator
J2
CON4
CON3
R8
R4
Multicomp 7005-8P8C
Multicomp 7005-8P8C
1 kΩ
1 kΩ
2.7 kΩ
2.7 kΩ
100 nF
150R
150R
CON2
CON1
R10
R6
R1
R2
C1
R9
R5
R7
R3
D1
D4
BAT54A
BAT54A
BZX84C15
UM10323_1
Footprint
4×2 way 2.54 mm PIN HEADER
9 way 2.54 mm PIN HEADER
9 way 2.54 mm PIN SOCKET
R0805
R0805
RJ-45 8TH
RJ-45 8TH
R0805
R0805
R0805
R0805
C0805
R0805
R0805
AXIAL VR25(0.4)
AXIAL VR25(0.4)
DIODE SOD57 (0.5)
DIODE SOD57 (0.5)
SOT23
SOT23
SOT23
Description
Test point connector
9-pin connector
9-pin socket
SMD resistor
SMD resistor
RJ-45 8 way connector
RJ-45 8 way connector
SMD resistor
SMD resistor
SMD resistor
SMD resistor
SMD capacitor
SMD resistor
SMD resistor
user installed leaded resistor
user installed leaded resistor
user installed leaded Zener diode
user installed leaded Zener diode
Schottky diode
Schottky diode
user installed SMD Zener diode
© NXP B.V. 2008. All rights reserved.
D3A
D3B
D5
User manual
Rev. 01 — 15 December 2008
5 of 9
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