Sundance SMT351 - Manual (Page 13)

Version 1.6 Page 13 of 25 SMT351 User Manual
Reset
The SMT351 is reset by the TIM global reset.
There is also a TIM CONFIG signal provided on the TIM connector J4 pin 74. This
provides a means of reprogramming the FPGA without having to drive the TIM Global
Reset signal. CONFIG falling will reset the SMT351 in the same way that a TIM
global Reset pulse will. Other modules in the system that are sensitive to the TIM
global Reset signal will not be affected by CONFIG.
CONFIG is driven from another TIM site on the carrier board, for instance, from a
DSP module running an application. (See
General Firmware Description for
information on the DSP TIM CONFIG signal).
After a Global Reset pulse, a DSP module drives CONFIG low and keeps it low by
default.
Setting SW1 switch number 2 will enable or disable TIM CONFIG:
Table 3: TIM CONFIG feature: SW1 settings
TIM CONFIG Switch
number 4
Enabled ON
Disabled OFF
Once a DSP application has been loaded, CONFIG can be driven the following way:
#include “SMT3xx.h”
#define CONFIG_BIT (1<<6)
int main()
{
*CONFIG &= (UINT32)~CONFIG_BIT;
timer_delay (100);
*CONFIG |= CONFIG_BIT;
timer_delay (100);
}