STR91x demonstration software

Functional description

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1.1

Power control

STR910-EVAL evaluation board is designed to be powered by a 5V DC power supply. You

can configure the evaluation board to use any of the following three power sources:

●

5V DC power adapter connected to the power supply jack (marked CN2, or PSU for

Power Supply Unit on the silk screen).

●

5V DC power with 500mA limitation via the USB type-B connector (marked CN3, or

USB on the silk screen).

●

5V DC power from the daughter board extension connectors (marked CN5 and

CN6, DTB for Daughter Board on the silk-screen).

For more details, please refer to the power supply section on the STR910-EVAL Evaluation

Board user manual.

1.2

Clocking

Four clock sources are available on STR910-EVAL evaluation board for the microcontroller,

USB, RTC and Ethernet PHY transceiver:

●

X1- 25 MHz crystal for the STR91xF microcontroller

●

X2- 32 kHz crystal for the embedded RTC

●

X3- 25 MHz crystal for Ethernet PHY transceiver U15

●

U12- 48 MHz oscillator for USB

1.3

Reset control

The reset signal of STR910-EVAL evaluation board is low active.

The reset sources include:

●

Power On Reset from STM1001 (U7)

●

Reset button (PB2)

●

Debugging tools via the CN9 or CN7 connector

●

Daughter board via the CN6 connector

1.4

Development and debugging

The STR910-EVAL evaluation board supports connection to both In-Circuit Emulators (ICE)

via a 20-pin standard JTAG interface (CN9) and Trace tools via a 38-pin Embedded Trace

Macrocell (ETM) interface (CN7).

1.5

Displays and input devices

1.5.1

LCD

32x122 graphic LCD display connected to GPIOs.