Texas Instruments TSW1200EVM, Руководство пользователя

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3 Hardware Configuration
3.1 Power Connections
TSW1200
Ground
J7
J14 J15
Selects 5 V
Output for J15
(Default)
Selects J7 for
6 V Input
(Default)
Selects J5
for 6 V Input
J22
JP8
6 V I/O
+6 V
Input
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Hardware Configuration
In this section, the various portions of the TSW1200EVM hardware are described.
The TSW1200EVM hardware is designed to operate from a single-supply voltage of greater than 6 Vdc.
For convenience, two options can supply power to the TSW1200EVM. A bench power supply can supply
power to banana jack connections on the TSW1200EVM, or a laptop-style power module that is included
with the TSW1200 hardware can supply power.
Figure 1 shows the relative position of the power
connections on the TSW1200EVM (revision B or C of the hardware).
CAUTION
TI recommends that the black banana jack J14 be connected to a bench
ground even if the 6-V external power brick is connected to J7. Intermittent loss
of the USB connection can sometimes be observed without a good ground from
the TSW1200EVM to the bench ground reference.
Figure 1. Position of Power Connections
Care must be taken in selection of the input power supply. One jumper selects whether the 6-V input
power comes from the banana jack, or whether it comes from the external power module. Another jumper
selects whether to connect the onboard regulated 5 V to the red banana jack for output. If the red banana
jack is used to input 6 V from a bench power supply, the onboard regulated 5 V must not be connected to
the red banana jack for output at the same time. Doing so causes the onboard 5-V regulator to fail over
time.
SLAU212A – April 2007 – Revised August 2008 TSW1200EVM: High-Speed LVDS Deserializer and Analysis System 5
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