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outputs available at the SMA connectors.
4. Programming the device is also possible using the TI Pro-Clock™ dedicated software (see section
4.2).
4
EVM Hardware
4.1
Hardware Configuration
This section gives an extended description of the board hardware, providing the user with a
comprehensive overview of its configuration. Detailed information regarding onboard jumpers,
solder-bridges, and communication interface (I
setup and play around according to his needs and wishes.
4.1.1
Power Supply
Power for the EVM can be supplied fully not only via the USB but also through a stabilized external power
supply. The following paragraphs describe how to set the board jumpers for both cases. Depending on the
device the user is dealing with (CDCE9xx or CDCEL9xx), a guideline of the jumper's setup for the output
stage is given.
NOTE: All EVMs are delivered with USB power supply as default.
4.1.1.1
External Power Supply
In order for the board to be supplied with an external power supply generator, follow the instructions
regarding the jumpers' setup for both the device core and the output stage. The latter depends on the type
of device (CDCE9xx or CDCEL9xx).
Core Supply Voltage
•
Insert jumper J47 (leave jumper J46 open).
•
Connect the positive pole of the external power supply to P1 and the negative pole to P2 (ground).
Voltage ranges between 1.7 V and 1.9 V (nominal 1.8 V).
•
Insert jumpers J23 and J25 and plug in the USB cable (use a 2.0 USB male B termination). Even
though externally supplied, the board needs this connection to allow the programming of the device.
Output Stage Supply Voltage (Either 3.3 V or 1.8 V)
a) CDCE9XX → VDDOUT = 3.3 V
•
Insert jumper J44 (leave J43 and J45 open).
•
Connect the positive pole of the external power supply to P3 and the negative pole to P2 (ground).
Voltage ranges between 3 V and 3.6 V (nominal 3.3 V).
NOTE: J45→ use this jumper to ground Vddout. In this way, the default functionality for the SDA/S1
and SCL/S2 pins is recalled, and the device can be reprogrammed even though these pins
were set to control pins (S1 and S2). Besides, the device default address is also recalled.
Set J39 and J33 for SDA and SCL to reprogram the device (leave J32, J34, J38, and J40
open).
b) CDCEL9XX → VDDOUT=1.8 V
•
Insert jumper J50 (leave jumpers J49 and J51 open).
•
Connect the positive pole of the external power supply to P4 and the negative pole to P2 (ground).
Voltage ranges between 1.7 V and 1.9 V (nominal 1.8 V).
SCAU022A – July 2007 – Revised July 2010
2
C/SMBus) is also provided, allowing the user to change the
Copyright © 2007–2010, Texas Instruments Incorporated
CDCE(L)9xx Performance Evaluation Module
EVM Hardware
5
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