Hitachi DK23CA-10 - 10 GB Hard Drive Specifications page 89

Read Data Valid
DIOR-/DIOW-
IORDY
SYMBOL
t
A
t
B
t
RD
t
B
Figure 6-6 Single Word DMA Data Transfer Timing(Mode 2)
DMARQ
DMACK-
DIOR-/DIOW-
Write Data Valid *3
Read Data Valid *3
*3 Data Consists of DD(15:0)
SYMBOL
t
0
t
C
t
D
t
E
t
F
t
G
t
H
t
I
t
J
t
S
K6602637
Rev.3
02.27.01
Figure 6-5 IORDY Timing
Description
IORDY Setup Time
IORDY Pulse Width
Read Data Valid to IORDY active
IORDY assertion to release
t
C
t
I
Description
Cycle Time
DMACK- to DMARQ delay
DIOR- / DIOW- Pulse Width
DIOR- Data Access
DIOR- Data Hold
DIOW- Data Setup
DIOW- Data Hold
DMACK- to DIOR- / DIOW- Setup
DIOR- / DIOW- to DMACK- Hold
DIOR- Setup
t
t
B
A
t
D
t
t
G
t
t t
E S
- 89 -
t
RD
t
C
MIN(ns) MAX(ns)
35
1250
0
5
t
J
H
F
MIN(ns) MAX(ns)
240
80
120
60
5
35
20
0
0
t -t
D E