mcf5249 Freescale Semiconductor, Inc, mcf5249 Datasheet - Page 208

• Manufacturer Part Number: mcf5249
• Description: Coldfire Integrated Microprocessor
• Manufacturer: Freescale Semiconductor, Inc

}
}
/* one of the two waits need to be done. */
/* First one is more suitable for polling */
/* second one more suitable for interrupt driven */
wait until ((FLASHMEDIACMD2 & 0xFFFF) == 0) OR
wait until (SHIFTBUSY2FALL event)
/* receive status from host */
wait until (SHIFTBUSY2RISE event) OR
wait until ((FLASHMEDIASTATUS & 8)!= 0)
RESPBITCOUNT = 46 or 134 /* depends on command */
FLASHMEDIACMD2 = RESPBITCOUNT;
while(RESPBITCOUNT > 0)
}
}
}
CMDBITCOUNT = 46
if(wide_shift_mode)
else
FLASHMEDIACMD2 = 0x460000 + CMDBITCOUNT
FLASHMEDIACMD1 = 0x040000 + wide_shift_mask
while(CMDBITCOUNT > 0)
}
}
wait until ((FLASHMEDIACMD2 & 0xFFFF) == 0) OR
wait until (SHIFTBUSY2FALL event)
/* start receiving data and status */
RESPBITCOUNT = 46 or 134;
BLOCKCOUNT = <N>;
{
if(FLASHMEDIADATA2 empty)
{
if(FLASHMEDIADATA2 full)
wide_shift_mask = 0x400000;
wide_shift_mask = 0;
{
if(FLASHMEDIADATA2 empty)
{
write data to FLASHMEDIADATA2
CMDBITCOUNT:= CMDBITCOUNT - 32;
{
read data from FLASHMEDIADATA2
RESPBITCOUNT:= RESPBITCOUNT - 32;
{
read FLASHMEDIADATA2
CMDBITCOUNT = CMDBITCOUNT - 32;
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