Technical Description
8
Seiko Epson Corporation
S5U13U00P00C100 USB 2.0 Adapter Board
Rev. 1.1
4 Technical Description
4.1 Power
S5U13U00P00C100 does not uses power from the USB. The boards need an external 5V
power supply. The power supply should be able to supply a current up to 2A at 5V.
The external power supply may be connected to PWR1 power jack. This is regular power
jack, with a 2.1mm diameter center pin. The positive of the power supply must be on the
center terminal.
S5U13U00P00C100 has internal voltage regulator to generate all the internal voltages and
also the 3.3V power available for the Epson LCD Controllers evaluation board. The 3.3V
power is available on pin 5 of P2 socket.
4.2 Host Bus Power
S5U13U00P00C100 has voltage translation buffers for the host bus. The voltage of the host
bus may be provided by the Epson LCD Controllers evaluation boards, through pin 11 of
connector P1, or it may be provided by the 3.3V voltage regulator on S5U13U00P00C100.
The host bus voltage is selected with JP1 jumper.
JP1 - Host Bus Voltage
JP1 selects the voltage level of the host bus on connectors P1 and P2.
When the jumper is at position 1-2, the voltage level is HIOVDD provided by the Epson
LCD Controllers evaluation boards (recommended setting).
When the jumper is at position 2-3, the voltage level is +3.3V.
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