mcf5249 Freescale Semiconductor, Inc, mcf5249 Datasheet - Page 207
mcf5249
Manufacturer Part Number
mcf5249
Description
Coldfire Integrated Microprocessor
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MCF5249.pdf
(454 pages)
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ounter1
/* write command to host */
CMDBITCOUNT = 46
FLASHMEDIACMD2 = 0x060000 + CMDBITCOUNT
while(CMDBITCOUNT > 0)
shift_busy1
DATA lines
write
FLASHMEDIACMD1 =
0x40000 +
wideShiftMask
Note 1: For 4-bit wide bus, wideShiftMask is 0x400000, CRC length is 64 bits
Note 2: If read data packet followed by another read data packet (block read), set
Note 3: Host interface will stop SCLK_OUT clock when needed to prevent transmit underrun or receive overrun. (not shown)
readDataMask = 0x40000. If only one read data packet, set readDataMask = 0.
Z
For 1-bit wide bus, wideShiftMask = 0, CRC length is 16 bits.
Z
P P
write
FLASHMEDIACMD1 =
dataBitCount +
readDataMask +
wideShiftMask
P
Freescale Semiconductor, Inc.
S
For More Information On This Product,
Card driving bus
Data
Go to: www.freescale.com
dataBitCount
read one or more
times from
FLASHMEDIADATA1
CRC
E
read
FLASHMEDIASTATUS
Extract bit CRCOK1
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