參數(shù)資料
型號(hào): ADZS-BF549-EZLITE
廠商: Analog Devices Inc
文件頁(yè)數(shù): 67/100頁(yè)
文件大小: 0K
描述: KIT EZLITE ADZS-BF549
產(chǎn)品培訓(xùn)模塊: Blackfin® Processor Core Architecture Overview
Blackfin® Device Drivers
Blackfin® Optimizations for Performance and Power Consumption
Blackfin® System Services
標(biāo)準(zhǔn)包裝: 1
系列: Blackfin®
類型: DSP
適用于相關(guān)產(chǎn)品: ADSP-BF549
所含物品: 評(píng)估板
ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
Rev. C
|
Page 69 of 100
|
February 2010
SD/SDIO Controller Timing
Table 50 and Figure 43 describe SD/SDIO controller timing.
Table 51 and Figure 44 describe SD/SDIO controller (high-
speed mode) timing.
Table 50. SD/SDIO Controller Timing
Parameter
Min
Max
Unit
Timing Requirements
tISU
SD_Dx and SD_CMD Input Setup Time
7.2
ns
tIH
SD_Dx and SD_CMD Input Hold Time
2
ns
Switching Characteristics
fPP
SD_CLK Frequency During Data Transfer Mode
1
020
MHz
fOD
SD_CLK Frequency During Identification Mode
100
2
400
kHz
tWL
SD_CLK Low Time
15
ns
tWH
SD_CLK High Time
15
ns
tTLH
SD_CLK Rise Time
10
ns
tTHL
SD_CLK Fall Time
10
ns
tODLY
SD_Dx and SD_CMD Output Delay Time During Data Transfer Mode
–1
14
ns
tODLY
SD_Dx and SD_CMD Output Delay Time During Identification Mode
–1
50
ns
1 tPP=1/fPP
2 Spec can be 0 kHz, meaning to stop the clock. The given minimum frequency range is for cases where a continuous clock is required.
Figure 43. SD/SDIO Controller Timing
SD_CLK
INPUT
OUTPUT
tISU
NOTES:
1 INPUT INCLUDES SD_Dx AND SD_CMD SIGNALS.
2 OUTPUT INCLUDES SD_Dx AND SD_CMD SIGNALS.
tTHL
tTLH
tWL
tWH
tPP
tIH
tODLY
VOH (MIN)
VOL (MAX)
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