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Technical Descriptions
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.
10
Seiko Epson Corporation
S5U13709P00C100 Evaluation Board
(Rev.1.1)
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