MC94MX21DVKN3 Freescale, MC94MX21DVKN3 Datasheet - Page 38
MC94MX21DVKN3
Manufacturer Part Number
MC94MX21DVKN3
Description
Manufacturer
Freescale
Datasheet
1.MC94MX21DVKN3.pdf
(98 pages)
Specifications of MC94MX21DVKN3
Operating Temperature (max)
70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
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Part Number:
MC94MX21DVKN3
Manufacturer:
FREESCALE
Quantity:
20 000
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Specifications
Figure 29
data transfer starts after N
for transmission errors. The card sends back the CRC check result as a CC status token on the data line. If
there was a transmission error, the card sends a negative CRC status (101); otherwise, a positive CRC
status (010) is returned. The card expects a continuous flow of data blocks if it is configured to multiple
block mode, with the flow terminated by a stop transmission command.
38
CMD
DAT
shows the basic write operation timing. As with the read operation, after the card response, the
S T
Host Command
Content
Z****Z
CMD
DAT
CMD
DAT
WR
CRC
S T
S T
D D D D
cycles. The data is suffixed with CRC check bits to allow the card to check
E Z Z P
Figure 28. Timing Diagrams at Data Read
Host Command
Host Command
Valid Read Data
Z Z P
Content
Content
N
CR
N
Z****Z
MC94MX21 Technical Data, Rev. 1.5
AC
*****
cycles
******
cycles
N
******
ST
CRC
CRC
P S T
D D D D
P S D
E Z Z P
E Z Z P
Z Z P
N
N
N
E
Content
AC
CR
CR
Response
D D D
Z
Read Data
cycles
Z
cycles
******
******
cycles
******
Z
P S T
P S D
P S T
*****
CRC E Z
Timing of stop command
(CMD12, data transfer mode)
Timing of single block read
D D D
Content
Content
P
Read Data
Response
Response
*****
N
AC
*****
cycles
*****
Timing of multiple block read
CRC E Z
CRC E Z
P S D D D D
Read Data
Freescale Semiconductor
*****
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