参数资料
型号: MPC8308-KIT
厂商: Freescale Semiconductor
文件页数: 42/83页
文件大小: 0K
描述: KIT EVALUATION FOR MPC830X
标准包装: 1
系列: PowerQUICC II™ PRO
类型: MPU
适用于相关产品: MPC8308
所含物品: 板,线缆,CD,电源
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 3
Freescale Semiconductor
47
Enhanced Secure Digital Host Controller (eSDHC)
13.2.2
Full Speed Input Path (Read)
This figure provides the data and command input timing diagram.
Figure 36. Full Speed Input Path
13.3
eSDHC AC Timing Specifications
This table provides the eSDHC AC timing specifications.
Table 40. eSDHC AC Timing Specifications for High Speed Mode
At recommended operating conditions NVDD = 3.3 V ± 300 mV.
Parameter
Symbol 1
Min
Max
Unit
Notes
SD_CLK clock frequency—high speed mode
fSHSCK
050
MHz
3
SD_CLK clock cycle
tSHSCK
20
ns
SD_CLK clock frequency—identification mode
fSIDCK
0400
kHz
SD_CLK clock low time
tSHSCKL
7—
ns
2
SD_CLK clock high time
tSHSCKH
7—
ns
2
SD_CLK clock rise and fall times
tSHSCKR/
tSHSCKF
—3
ns
2
Input setup times: SD_CMD, SD_DATx
tSHSIVKH
3—
ns
2
Input hold times: SD_CMD, SD_DATx
tSHSIXKH
2—
ns
2
Output delay time: SD_CLK to SD_CMD, SD_DATx valid
tSHSKHOV
3—
ns
2
Output Hold time: SD_CLK to SD_CMD, SD_DATx invalid
tSHSKHOX
–3
ns
2
SD Card Input Setup
tISU
6—
ns
3
SD Card Input Hold
tIH
2—
ns
3
tCLK_DELAY
Output from the
SD CLK at
the Card Pin
SD Card Pins
tSFSIVKH
tSFSIXKH
Driving
Edge
Sampling
Edge
tOH
tDATA_DELAY
tODLY
tSFSCK (Clock Cycle)
(MPC8308 Input Hold)
SD CLK at the
MPC8308 Pin
Input at the
MPC8308 Pins
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