Initiating Write Dma - IBM DBCA-204860 - Travelstar 4.8 GB Hard Drive Specifications

6.5.3.5 Initiating Write DMA

D M A R Q
< T u i
D M A C K
< T a c k > < T e n v >
S T O P
T z r d y >
H D M A R D Y
< T a c k >
H S T R O B E
D D ( 1 5 : 0 0 ) X X X X X X X X X X X X X X X X X X X X X X X X X X
<
P A R A M E T E R D E S C R I P T I O N
T u i U n l i m i t e d i n t e r l o c k t i m e
T a c k S e t u p t i m e b e f o r e
T e n v E n v e l o p e t i m e
T z r d y W a i t t i m e b e f o r e d r i v i n g D D M A R D Y
T l i L i m i t e d i n t e r l o c k t i m e
T c y c C y c l e T i m e
T 2 c y c 2 C y c l e t i m e
T d s D a t a s e t u p t i m e ( a t d e v i c e s i d e )
T d h D a t a H o l d t i m e
Figure 32. Ultra D M A cycle timings (Initiating Write)
46
O E M Specifications of DBCA-2xxxxx 2.5 inch H D D
>
< < T l i >
T u i <
W T D a t a
H o s t d r i v e s D D
D M A C K a s s e r t i o n
( a t d e v i c e s i d e )
< T 2 c y c
> < T c y c > <
T d s < > <
X X X W T D a t a
M O D E 0 M O D E 1
M I N M A X M I N
0 0
2 0 2 0
2 0 7 0 2 0
0 0
0 1 5 0 0
1 1 4 7 5
2 3 5 1 5 6
1 5 1 0
5 5
>
T c y c >
> T d h
X X X W T D a t a
>
[ n s e c ]
M O D E 2
M A X M I N M A X
0
2 0
7 0 2 0 7 0
0
1 5 0 0 1 5 0
5 5
1 1 7
7
5