MCIMX31L FREESCALE [Freescale Semiconductor, Inc], MCIMX31L Datasheet - Page 137

• Manufacturer Part Number: MCIMX31L
• Description: Multimedia Applications Processors
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

4.3.19
This section describes the electrical information of the SDHC.
4.3.19.1 SDHC Timing
Freescale Semiconductor
Figure 74
.
output from SDHC to card MMCx_DAT_1
input from card to SDHC
Card Input Clock
SDHC output / Card Inputs CMD, DAT (Reference to CLK)
SD1
SD2
SD3
SD4
SD5
SD6
SD7
ID
SDHC Electrical Specifications
depicts the timings of the SDHC, and
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
SDHC output / Card input Set-up Time
SDHC output / Card input Hold Time
MMCx_CLK
MMCx_DAT_0
MMCx_DAT_2
MMCx_DAT_3
MMCx_CMD
MMCx_DAT_1
MMCx_DAT_0
MMCx_DAT_2
MMCx_DAT_3
MMCx_CMD
MMCx_CLK
Parameter
Table 57. SDHC Interface Timing Parameters
i.MX31/i.MX31L Advance Information, Rev. 1.4
Figure 74. SDHC Timing Diagram
SD3
SD5
SD8
SD2
SD6
SD4
Preliminary
Table 57
Symbol
f
f
f
f
t
t
t
t
OD
t
lists the timing parameters.
PP
PP
PP
TLH
THL
WH
ISU
t
WL
IH
1
2
3
4
SD1
SD7
Min
100
10
10
0
0
0
–
–
5
5
Max
Electrical Characteristics
400
400
25
20
10
10
–
–
–
–
MHz
MHz
Unit
kHz
kHz
ns
ns
ns
ns
ns
ns
137