LC786800E Datasheet, PDF (17/26 Pages) Sanyo Semicon Device – Compressed Audio signal Processor IC with USB host controller

SD Memory Card Interface
LC786800E
SD Memory Card Input/Output Timing specification
SDCCLK
(Output)
tSDCKL tSDCKH
1/fSDCKF
SDCMDIO
(Inout)
SDCDAT[3:0]
(Inout)
tSDCMS
tSDCMH
tSDCDS
tSDCDH
* Relationship between signal name and pin name
SDCCLK : GP34
SDCMDIO : GP35
SDCDAT [2] : GP37
SDCDAT [1] : GP32
tSDCMO
tSDCDO
SDCDAT [3] : GP36
SDCDAT [0] : GP33
Parameter
Symbol
Pin names
min
typ
max
unit
SDCCLK clock frequency
fSDCKF
SDCCLK
6.0
MHz
SDCCLK clock "H" level width
tSDCKH
SDCCLK
83.3
ns
SDCCLK clock "L" level width
tSDCKL
SDCCLK
83.3
ns
Setup time for command input
tSDCMS
SDCMDIO, SDCCLK
30.0
ns
Hold time for command input
tSDCMH
SDCMDIO, SDCCLK
30.0
ns
Command output valid time
tSDCMO
SDCMDIO, SDCCLK
30.0
ns
Setup time for data input
tSDCDS
SDCDAT [3:0], SDCCLK
30.0
ns
Hold time for data input
tSDCDH
SDCDAT [3:0], SDCCLK
30.0
ns
Data output valid time
tSDCDO
SDCDAT [3:0], SDCCLK
30.0
ns
Note: Internal CPU (ARM7) must be set to normal mode. Never use the SD Memory Card interface at the internal
CPU’s Low speed mode.
No.A2082-17/26