參數(shù)資料
型號: TMX320VC5509AGHH
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: TMS320VC5509A Fixed-Point Digital Signal Processor
中文描述: TMS320VC5509A定點數(shù)字信號處理器
文件頁數(shù): 135/144頁
文件大?。?/td> 1603K
代理商: TMX320VC5509AGHH
Electrical Specifications
135
November 2002 Revised January 2005
SPRS205D
5.18 Secure Digital (SD) Card Timings
Table 543 and Table 544 assume testing over recommended operating conditions (see Figure 540).
Table 543. Secure Digital (SD) Card Timing Requirements
NO.
CV
DD
= 1.2 V
CV
DD
= 1.35 V
MIN
CV
DD
= 1.6 V
UNIT
MAX
MIN
MAX
SD7
t
su(DV-CLKH)
t
h(CLKH-DV)
Setup time, data valid before clock high
9
6
ns
SD8
Hold time, data valid after clock high
0
0
ns
Table 544. Secure Digital (SD) Card Switching Characteristics
NO.
PARAMETER
CV
DD
= 1.2 V
CV
DD
= 1.35 V
MIN
CV
DD
= 1.6 V
UNIT
MAX
21
MIN
MAX
25
SD1
f
(PP)
f(
OD)
t
w(CLKL)
t
w(CLKH)
t
r(CLK)
t
f(CLK)
t
d(CLKL-DV)
Clock frequency data transfer mode (PP) (C
L
= 100 pF)
Clock frequency identification mode (OD)
MHz
SD2
400
400
kHz
SD3
Clock low time (C
L
= 100 pF)
Clock high time (C
L
= 100 pF)
Clock rise time (C
L
= 100 pF)
Clock fall time (C
L
= 100 pF)
Delay time, SD.CLK low to data valid
10
10
ns
SD4
10
10
ns
SD5
10
10
ns
SD6
10
10
ns
SD9
1
5
1
5
ns
Maximum clock frequency specified in the SD Specification is 25 MHz. The 5509A can support clock frequency as high as 21.0 MHz at core
voltage = 1.2 V.
SD6
SD5
SD1
SD4
SD8
SD7
SD9
SD.CLK
SD.CMD
SD.DATx
SD.CMD
SD.DATx
SD3
Figure 540. Secure Digital (SD) Timings
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