Datasheet
T
T
T
S
S
S
4
4
4
~
~
~
1
1
1
6
6
6
G
G
G
U
U
U
S
S
S
D
D
D
H
H
H
C
C
C
2
2
2
-
-
-
P
P
P
3
3
3
4~16GB microSDHC Class 2 Card + Reader P3
Transcend Information Inc. 
15
CSD Register Structure 
• TAAC 
This field is fixed to 0Eh, which indicates 1 ms. The host should not use TAAC, NSAC, and R2W_FACTOR to calculate 
timeout and should uses fixed timeout values for read and write operations (See 4.6.2). 
• NSAC 
This field is fixed to 00h. NSAC should not be used to calculate time-out values. 
• TRAN_SPEED 
The following table defines the maximum data transfer rate per one data line - TRAN_SPEED:










