UM0805

Expansion connector (optional)

Doc ID 16304 Rev 3

17/29

Note:

When DIP switch SW1-x is in the ON position, the bit value is 0. When the DIP switch is in

the OFF position, the bit value is 1.

The default setting of SW1 is: Bit 1 = OFF all other bits (2:6) = ON

For more details on these settings, refer to the miscellaneous register description in the

SPEAr600 user manual available at www.st.com/spear.

9.2

Switch 2 (general-purpose settings)

Default setting = all bits OFF.

Note:

When DIP switch SW2-x is in the ON position, the bit value is 0. When the DIP switch is in

the OFF position, the bit value is 1.

10

Expansion connector (optional)

An expansion connector (J1) is provided to allow the user to add an additional board. (Part

number TMMS-150-01-FM-Q-FS Samtec). It mates with SQT-150-01-FM-Q

The following signals are available on connector J1:

●

FPGA_GPIO(0) ~ FPGA_GPIO(111)

●

Three SoC GPIO lines

●

Five Analog inputs (A/D)

●

+12V (1A)

●

+5V (1A)

●

+3.3V (200 mA)

●

+1.2V (200 mA)

Note:

For the connector pinout, refer to the schematic drawing available on www.st.com/spear.

Table 10.

Switch 2 (general-purpose settings)

Bit

Description

1

On - The FPGA done signal controls the main reset to avoid any unwanted activity during the

FPGA bit stream download.

2

On - The Serial Flash memories are protected against unwanted write operations.

3

4

This switch controls the external oscillator (U4) enable.

5

This switch enables the boot through USB interface.

6

This switch should be closed when the ETM interface is enabled and there is an LCD

connected to prevent the LCD from disabling the LCD power by itself.