SanDisk SDSDB-016G-A11 Product Manual page 108

Revision 2.2
Host Command to Card Response—Card is Busy
H L L
CS
Data In X H H H
Data Out Z Z H H H
Card Response to Host Command
L L L
CS
Data In H H H H
Data Out H H H H
5.23.3 Data Read
The following timing diagram describes all single block read operations with the exception
of SEND_CSD command.
Single Block Read Timing
H L L
CS
Data In X H H H
Data Out Z Z H H H
The following figure describes a Stop Transmission operation in case Multiple Block Read
occurs.
Multiple Block Read Timing
L L L
CS
Data In X H H H H
Data Out
Reading the CSD Register
The following timing diagram describes the SEND_CSD command bus transaction. The
timeout values for the response and the data block are N
unknown).
Reading the CSD Register
H L L
CS
Data In X H H H
Data Out Z Z H H
© 2004 SanDisk Corporation
L *******************
N
CS
H 6 byte cmd H H H H H
N
CR
H ******** H H H H
L L
H H **************** H H H H
N
CR
H 1 or 2 byte resp. H H H H
L ***************************************
N
CS
H Read Command H H H H H
N
CR
H ******** H H H H
L
N
CS
stop tran cmd H H H H H
N
CR
data transfer to host
<2clk>
L *******************
N
CS
H read command H H H H
N
CR
H H ********** H H H H
5-18
L L L L H H H L
N
EC
H H H H H H H H X X X H H
Card resp. Busy L Z Z Z
*******************
6-byte command
*********************
***********************
N
AC
Card resp. H H H H Data Block
*******************
***************
H H card response
(because the N
CR
*********************
H
N
CX
card response H H H H data blk
Chapter 5 – SPI Protocol
SD Card Product Manual
L L L L L H H
N N
DS EC
H H H H X X
H H H H Z
Busy
L L H H H H
H H H X X X X
H H H H Z Z Z
L L L H H H H
N
EC
H H H X X X X
H H H H Z Z Z
H
is still
AC
L L L H H H H
N
EC
H H H X X X X
H H H H Z Z Z
12/08/04