at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 1021
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at91sam9263
Manufacturer Part Number
at91sam9263
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9263.pdf
(1065 pages)
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46.9.3
Table 46-33. MCI Timings
6249D–ATARM–20-Dec-07
Symbol
1
2
3
4
5
MCI
Parameter
1/t
Input hold time
Input setup time
Output hold time
Output setup time
CLK
= CLK frequency at Data transfer Mode (PP)
The PDC interface block controls all data routing between the external data bus, internal
MMC/SD module data bus, and internal system FIFO access through a dedicated state machine
that monitors the status of FIFO content (empty or full), FIFO address, and byte/block counters
for the MMC/SD module (inner system) and the application (user programming).
These timings are given for a 25 pF load, corresponding to 1 MMC/SD Card.
Figure 46-12. MCI Timing Diagram
CMD_DAT Output
CMD_DAT Input
Bus Clock
2
Valid Data
AT91SAM9263 Preliminary
1/t
CLK
4
Min
-0.1
-1.0
1.5
0
Valid Data
- 2.8
6
1
Max
Valid Data
51
Valid Data
3
5
Units
MHz
ns
ns
ns
ns
1021
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