Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Hoja De Datos
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AT91SAM9G25-EK
1070
SAM9G25 [DATASHEET]
11032C–ATARM–25-Jan-13
46.17.3.2 Timing Extraction
Figure 46-21.ISI Timing Diagram
46.17.4 HSMCI
The High Speed MultiMedia Card Interface (HSMCI) supports the MultiMedia Card (MMC) Specification V4.3, the SD
Memory Card Specification V2.0, the SDIO V2.0 specification and CE-ATA V1.1.
Memory Card Specification V2.0, the SDIO V2.0 specification and CE-ATA V1.1.
46.17.5 EMAC
46.17.5.1 Timing conditions
Table 46-40. ISI Timings with Peripheral Supply 3.3V
Symbol
Parameter
Min
Max
Units
ISI
1
DATA/VSYNC/HSYNC setup time
T
PIXCLK
/2 + 0.3
ns
ISI
2
DATA/VSYNC/HSYNC hold time
-T
PIXCLK
/2 - 3.4
ns
ISI
3
PIXCLK frequency
54 MHz
MHz
PIXCLK
DATA[7:0]
VSYNC
HSYNC
VSYNC
HSYNC
Valid Data
Valid Data
Valid Data
1
2
3
Table 46-41. ISI Timings with Peripheral Supply 1.8V
Symbol
Parameter
Min
Max
Units
ISI
1
DATA/VSYNC/HSYNC setup time
T
PIXCLK
/2 + 0.5
ns
ISI
2
DATA/VSYNC/HSYNC hold time
-T
PIXCLK
/2 - 3.6
ns
ISI
3
PIXCLK frequency
54 MHz
MHz
Table 46-42. Capacitance Load on data, clock pads
Corner
Supply
MAX
STH
MIN
3.3V
20pf
20pf
0pf
1.8V
20pf
20pf
0pf