19-0518; Rev 1; 3/07
MAX9225/6 Evaluation Kit
General Description
The MAX9225/6 evaluation kit (EV kit) is a fully assem-
bled and tested printed circuit board (PCB) that simpli-
fies the evaluation of the MAX9225 10-bit, 10MHz to
20MHz serializer and the MAX9226 10-bit, 10MHz to
20MHz deserializer. The MAX9225 IC transfers 10-bit
parallel 1.8V to 3.3V logic to an LCDS 2-wire serial inter-
face. The MAX9226 IC accepts an LCDS data and con-
verts it back to a 10-bit parallel 1.8V to 3.3V logic signal.
The MAX9225 serializer operates from a single +2.375V
to +3.465V supply and accepts +1.71V to +3.465V
inputs. The MAX9226 deserializer operates from a
+2.375V to +3.465V core supply and has a separate
output buffer supply, allowing +1.71V to +3.465V out-
put-high levels.
Features
♦
10-Bit Parallel I/O Interface Directly to 1.8V to 3.3V
Logic
♦
2-Wire Serial Interface
♦
Independent Evaluation of Serializer (MAX9225)
and Deserializer (MAX9226)
♦
Low-Voltage, Low-Power Operation
♦
Including Flat-Flex Cable for 2-Wire Interface
♦
Fully Assembled and Tested
Evaluates: MAX9225/MAX9226
Component Suppliers
SUPPLIER
KEMET Corp.
Taiyo Yuden
PHONE
864-963-6300
800-348-2496
WEBSITE
www.kemet.com
www.t-yuden.com
PART
MAX9225/6EVKIT
Ordering Information
TEMP RANGE
0°C to +70°C
IC PACKAGE
16 TQFN-EP*
*EP
= Exposed paddle.
TDK Corp.
847-803-6100 www.component.tdk.com
Note:
Indicate that you are using the MAX9225/MAX9226
when contacting these component suppliers.
Component List
DESIGNATION QTY
DESCRIPTION
10µF ±20%, 6.3V X5R ceramic
capacitors (0805)
Taiyo Yuden JMK212BJ106MG
TDK C2012X5R0J106M
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
0.01µF ±10%, 25V X7R ceramic
capacitors (0402)
Kemet C0402C103K3RAC
TDK C1005X7R1E103K
50Ω BNC PC board mount connectors
DESIGNATION QTY
J1, J2, J3
JU1, JU4, JU5
JU2, JU3
R1, R2
R3
R4
R5, R6
U1
U2
—
3
3
2
2
0
1
2
1
1
2
DESCRIPTION
2 x 10-pin headers
2-pin headers
3-pin headers
249Ω ±1% resistors (0402)
Not installed, short by PC trace,
resistor (0402)
10kΩ ±5% resistor (0603)
49.9Ω ±1% resistors (1206)
MAX9225ETE (16-pin TQFN, 3mm x 3mm)
MAX9226ETE (16-pin TQFN, 3mm x 3mm)
Shunts
C1, C2, C3
3
C4, C5, C6
3
C7, C8, C9
3
EX_PCLKIN,
POWER-DOWN
2
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX9225/6 Evaluation Kit
Evaluates: MAX9225/MAX9226
Quick Start
•
Three separate 3.0V, 50mA power supplies
•
Data generator
•
Logic analyzer
Detailed Description
The MAX9225/6 EV kit is a fully assembled and tested
board that simplifies the evaluation of the MAX9225 10-
bit, 10MHz to 20MHz serializer and the MAX9226 10-
bit, 10MHz to 20MHz deserializer. The MAX9225/
MAX9226 serializer/deserializer chipset reduces wiring
by serializing 10 bits onto a single differential pair. The
2-wire serial interface uses low-current differential
singling (LCDS) for low-EMI, high common-mode noise
immunity, and ground-shift tolerance.
The MAX9225 serializer operates from a single +2.375V
to +3.465V supply and accepts +1.71V to +3.465V
inputs. The MAX9226 deserializer operates from a
+2.375V to +3.465V core supply and has a separate
output buffer supply, allowing +1.71V to +3.465V out-
put-high levels, VDDO
≤
VDD.
Recommended Equipment
Procedure
The MAX9225/6 EV kit is fully assembled and tested.
Caution: Do not turn on the power supplies until all
connections are completed.
1) Connect JU1 and JU4 with a two-connection, flat-
flex cable included with the EV kit.
2) Verify that there is a shunt across JU3 (pins 1-2)
(power-down).
3) Connect the clock signal from the data generator
to pin 2 of JU2 and connect the ground to pin 1 of JU2.
4) Connect the desired data to the 10-bit parallel
inputs (see Table 3 for input bit location).
5) Connect the 10-bit parallel outputs to the input of the
logic analyzer (see Table 3 for output bits location).
6) Connect the output clock signal to the logic analyzer,
pin 1 of JU5.
7) Connect the positive of a 3.0V power supply to the
VDD1 pad, and then connect the negative of the
power supply to GND1.
8) Connect the positive of a 3.0V power supply to the
VDD2 pad, and then connect the negative of the
power supply to GND2.
9) Connect the positive of a 3.0V power supply to the
VDDO pad, and then connect the negative of the
power supply to GND3.
10) Turn on all three power supplies, and then enable
the data generator and logic analyzer.
11) Move the shunt on JU3 to pins 2-3 (power-up).
12) Compare the input signals of the serializer and the out-
put signals of the deserializer with the logic analyzer.
Transferring Data from Serializer
to Deserializer
The EV kit provides two 2-pin headers, JU1 and JU4,
for transferring data from the serializer to the deserializ-
er with a flat-flex cable. JU1 is the output of the serializ-
er, and JU4 is the input of the deserializer. The 2-pin
header, JU1, provides easy connection for either using
a differential probe to monitor the output or connecting
a flat-flex cable to the deserializer. Pads SDO+/SDO-
and SDI+/SDI- are provided for extra connections.
Parallel Clock Input
The MAX9225/6 EV kit allows the MAX9225 to accept a
clock from either a data generator/logic analyzer or a
clock from an individual function generator, which is 50Ω
terminated, by changing jumper JU2. See Table 1 for
JU2 functions. The clock and the data inputs to the
MAX9225 need to be synchronized.
Table 1. JU2 Functions
SHUNT
POSITION
Open
PIN PCLKIN
Clock externally
connected to pin 2
of JU2
Connected to
EX_PCLKIN
connector,
50Ω terminated
PARALLEL CLOCK
INPUT
Using clock from a
data generator/
logic analyzer
2-3
Using clock from a
function generator
2
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