參數(shù)資料
型號(hào): GL826-MNG
廠商: Genesys Logic, Inc.
英文描述: USB 2.0 Multi-Slot Flash Card Reader Controller (All-in-one with Dual SD/MMC bus Interface)
中文描述: 個(gè)USB 2.0多插槽閃存卡讀卡器控制器(全在同一個(gè)雙SD / MMC卡總線(xiàn)接口)
文件頁(yè)數(shù): 36/43頁(yè)
文件大?。?/td> 698K
代理商: GL826-MNG
GL826 USB 2.0 Multi-Slot Flash Card Reader Controller
2000-2007 Genesys Logic Inc. - All rights reserved.
Page 36
4.9 AC Characteristics of Secure Digital / MultiMediaCard
Clock
Input
Output
t
ODLY
f
PP
t
WL
t
ISU
t
THL
t
TLH
t
IH
t
WH
Figure 4.6
Timing Diagram of Secure Digital / MultiMediaCard
Table 4.10
AC Characteristics of SD/MMC Interface Timing (C
L
= 10 pF)
Symbol
Parameter
Clock Rate
Unit
f
PP
Clock frequency Data Transfer Mode
48
24
20
15
MHz
f
OD
Clock frequency Identification Mode
375
375
375
375
KHz
t
WL
Clock low time (min)
7
20
22
30
ns
t
WH
Clock high time (min)
7
20
22
30
ns
t
TLH
Clock rise time (max)
3
3
3
3
ns
t
THL
Clock fall time (max)
3
3
3
3
ns
t
ISU
Input set-up time (min)
6
5
20
27
ns
t
IH
Input hold time (min)
2
5
20
27
ns
t
ODLY
Output delay time (max)
14
14
14
14
ns
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