Freescale Semiconductor KIT34825EPEVME, Руководство пользователя

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KIT34825EPEVME Evaluation Board , Rev. 2.0
Freescale Semiconductor 19
Using the Evaluation Kit
6.1.3 USB slave device signals
A cell phone is a USB slave device. A PC is a USB host device so cannot be used to offer slave device
signals. The evaluation board offers a female USB type-A connector for a USB flash memory device. The
user can connect any USB2.0 compatible flash memory device to the evaluation board to test the
480Mbps data transfer speed and the performance of the analog switches in the 34825. The connection
of the flash memory is illustrated in
Figure 16 .
6.1.4 Jumper configuration
The jumpers need be configured properly for the operation. The location of the jumpers are shown in
Figure 17 . These jumpers should be removed when using the test points to directly jump the 34825
signals to the customer system board.
The default configuration for the jumpers is summarized in Table 1 . The jumper configuration should stay
in the default connections if the on-board accessory simulator or the on-board remote control is not used.
J1 J2 J3
J4 J5 J7 J6 J9 J8
J11
J10
J17
J16
J13
J12
J9 shorted to
connect 5V to
VBUS of mini-
USB connector
J4 to J8 &
J12 & J13
always
shorted
J10 & J11 &
J16 & J17
always open
J3 shorted
for USB
charger
accessory
Pin 39 &
40 of J2
short
DP/DM of
mini-USB
connector
SW1
Figure 17. The Jumper Configurations.
Table 1. The Default Configuration of the Jumpers
Jumper Default Connection Comments
J4, J5 Shorted LED indications for ISET and OUT signals
J6, J7, J8 Shorted I2C and Interrupt signals
J10, J11 Open Reserved for Freescale internal use only
J12, J13 Shorted To provide VDD and VDDIO supplies to 34825