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TE0320 is provided with 4 system DIP slide switches as shown in Figure 32: S1A, S1B, S1C, S1D.

 


Figure 32: DIP slide switches S1[A : D].
Please note the 4 switch labels are on one side and the <ON> label is on the opposite side.
DIP slide switches S1[A : D] condition the value of some system signals as described in Table 13.

switch

S1 label

signal name

<OFF>

<ON>

S1A

1

EEPROM serial data

the USB FX2 microcontroller CANNOT read / write the serial EEPROM

the USB FX2 microcontroller can read / write the serial EEPROM

S1B

2

M2

mode pin M2 = 1

M2 = 0

S1C

3

M1

mode pin M1 = 1

M1 = 0

S1D

4

/MR (master reset)

module reset

module running

Table 13: S1X settings description.
DIP slide switches S1A is ON by default, to allow the USB FX2 microcontroller to read the serial EEPROM and enumerate as a custom/specific USB device. When DIP slide switches S1A is ON, the USB FX2 microcontroller can (re)write the serial EEPROM to, for example, store a (new) custom/specific firmware. When DIP slide switch is OFF, the USB FX2 microcontroller cannot read the serial EEPROM and enumerates as a generic USB device.

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