X9520_07 Datasheet, PDF (27/29 Pages) Intersil Corporation – Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors

X9520
Appendix 2
DCP1 (100 Tap) Tap Position to Data Byte Translation Algorithm Example. (Example 1)
unsigned DCP1_TAP_Position(int tap_pos)
{
int block;
int i;
int offset;
int wcr_val;
offset= 0;
block = tap_pos / 25;
if (block < 0) return ((unsigned)0);
else if (block <= 3)
{ switch(block)
{ case (0): return ((unsigned)tap_pos) ;
case (1):
{
wcr_val = 56;
offset = tap_pos - 25;
for (i=0; i<= offset; i++) wcr_val-- ;
return ((unsigned)++wcr_val);
}
case (2):
{
wcr_val = 64;
offset = tap_pos - 50;
for (i=0; i<= offset; i++) wcr_val++ ;
return ((unsigned)--wcr_val);
}
case (3):
{
wcr_val = 120;
offset = tap_pos - 75;
for (i=0; i<= offset; i++) wcr_val-- ;
return ((unsigned)++wcr_val);
}
}
}
return((unsigned)01100000);
}
27
FN8206.2
August 20, 2007