Iiof interrupt – Sundance SMT395E User Manual
Page 15
Version 2.1
Page 15 of 30
SMT395Q User Manual
IIOF interrupt
The firmware can generate pulses on the external interrupt lines of the TIM.
See
LED
The SMT395E has 31 LEDs.
The LED adjacent to the FPGA always displays the state of the FPGA DONE pin. This LED
is OFF when the FPGA is properly configured (DONE=1) and ON when it is not configured
(DONE=0).
This LED should go ON when the board is first powered up and go OFF when the FPGA has
been successfully programmed (this is the standard operation of the boot code resident in
the flash memory device). If the LED does not light at power-on, check that you have the
mounting pillars and screws fitted properly. If it stays on, the DSP is not booting correctly, or
is set to boot in a non-standard way. In this case check the Flash ROM is properly
programme
Fourteen of the LEDs can be controlled with the LED register.
Writing ‘1’ will illuminate the LED; writing ‘0’ will turn it off.
LED Register
LED 0xB00D0000
31–4 17-6 5-2
1 0
LED D102..D113
TTL3-0
LED D101 LED D100
RW,0
RW,0
RW,0
RW,0
The remaining 4 LEDs are connected to the DSP’s GPIO pins 12..15. (Writing 0xF000 to the
GPVAL register will turn them ON)
TTL
The SMT395E has 4 LVTTL (3.3V only) signals available on connector JP2.
TTL0 to TTL3 have been mapped in the LED register.