MC94MX21DVKN3 Freescale, MC94MX21DVKN3 Datasheet - Page 37

• Manufacturer Part Number: MC94MX21DVKN3
• Manufacturer: Freescale

Specifications of MC94MX21DVKN3

• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Figure 28
read command (which specifies the start address in the argument field). The response is sent on the
SD_CMD lines as usual. Data transmission from the card starts after the access time delay N
from the last bit of the read command. If the system is in multiple block read mode, the card sends a
continuous flow of data blocks with distance N
data stops two clock cycles after the end bit of the stop command.
Freescale Semiconductor
shows basic read operation timing. In a read operation, the sequence starts with a single block
CMD
CMD
CMD
S T
S T
S T
Figure 27. Timing Diagrams at Data Transfer Mode
Host Command
Host Command
Content
Content
Content
Response
MC94MX21 Technical Data, Rev. 1.5
CRC
CRC
CRC
Timing response end to next CMD start (data transfer mode)
E Z Z P
E Z
E Z
AC
N
N
N
Command response timing (data transfer mode)
CR
RC
CC
******
******
until the card sees a stop transmission command. The
******
Timing of command sequences (all modes)
cycles
cycles
cycles
P S T
Z S T
Z S T
Host Command
Host Command
Content
Content
Content
Response
CRC E Z Z
CRC E Z Z
CRC E Z Z
Z
Z
Z
AC
Specifications
, beginning
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