K20P104M100SF2 Freescale Semiconductor, K20P104M100SF2 Datasheet - Page 50

• Manufacturer Part Number: K20P104M100SF2
• Description: K20 Sub-Family
• Manufacturer: Freescale Semiconductor

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Peripheral operating requirements and behaviors
6.8.6 SDHC Specifications
The following timing specs are defined at the chip I/O pin and must be translated
appropriately to arrive at timing specs/constraints for the physical interface.
50
Num
SD1
SD2
SD3
SD4
SD5
DS12
DS13
DS14
DS15
DS16
Num
DSPI_SS
DSPI_SCK
(CPOL=0)
DSPI_SOUT
DSPI_SIN
Table 39. Slave Mode DSPI Timing (High-speed mode) (continued)
DSPI_SCK to DSPI_SOUT invalid
DSPI_SIN to DSPI_SCK input setup
DSPI_SCK to DSIP_SIN input hold
DSPI_SS active to DSPI_SOUT driven
DSPI_SS inactive to DSPI_SOUT not driven
Symbol
t
t
f
t
t
fpp
fpp
fpp
TLH
THL
OD
WL
WH
SDHC output / card inputs SDHC_CMD, SDHC_DAT (reference to SDHC_CLK)
Figure 20. DSPI Classic SPI Timing — Slave Mode
Clock frequency (low speed)
Clock frequency (SD\SDIO full speed)
Clock frequency (MMC full speed)
Clock frequency (identification mode)
Clock low time
Clock high time
Clock rise time
Clock fall time
Description
K20 Sub-Family Data Sheet Data Sheet, Rev. 1, 11/2010.
Table 40. SDHC switching specifications
DS13
DS15
Description
Table continues on the next page...
First data
First data
DS14
Card input clock
Preliminary
DS10
DS12
Data
Data
DS11
Min.
DS9
—
—
0
2
7
Last data
Last data
Min.
—
—
0
0
0
0
7
7
Freescale Semiconductor, Inc.
DS16
Max.
14
14
—
—
—
Max.
400
400
25
20
—
—
3
3
Unit
MHz
MHz
ns
ns
ns
ns
ns
Unit
kHz
kHz
ns
ns
ns
ns
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