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S5U13709 Evaluation Board User Manual
5 Technical Descriptions
5.1 Current Measurement
Current measurement can be performed individually for each power supplies: HIOVDD, NIOVDD,
COREVDD and PLLVDD. For details on which jumper block is used for each power supply, refer
to Table 3-2a: "2-Pin Jumper Settings," on page 9.
To measure current for a particular power supply, remove the corresponding jumper shunt and
place an ammeter on the jumper terminals to measure the current draw. Use the lowest possible
range for the measurement to minimize loading from the ammeter.
Note
Attaching an ammeter while doing other tests can cause a voltage drop across the ammeter and
may produce invalid test results.
5.2 Clock source select
The S5U13709P00C100 Evaluation Board has an on-board 24MHz oscillator (Y1) which drives
the input with the internal oscillator circuit (XCG1). When not using the internal oscillator circuit,
this board allows the usage of a variety of crystal oscillators with osc1 connectors (CLKI). The
XCG1 source selection is determined with jumper on 1-2pin of JP8 and 1-2pin of JP11. The CLKI
source selection is determined with jumper on 1-2pin of JP7 and 2-3pin of JP8. For details on
configuring the clock source, refer to Table 3-2a and Table 3-2b on page 9.
5.3 Hardware Reset
The S5U13709C00100 Evaluation Board has an on-board reset IC which drives the RESET#
input pin on the panel. This occurs when push button SW3 is pressed.
13
EPSON
S5U13709P00C100 Evaluation Board User Manual Rev. 1.00
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