參數(shù)資料
型號： THNCFxxxxMA
廠商： Toshiba Corporation
英文描述： The THNCFxxxxMA series CompactFlash card is a flash technology based with ATA interface flash memory card
中文描述： 該THNCFxxxxMA系列CF卡是閃存技術(shù)，ATA接口卡的閃存
文件頁數(shù)： 31/47頁
文件大小： 501K
代理商： THNCFXXXXMA
THNCFxxxxMA Series
2002-10-20 31/47
Preliminary
Sector Transfer Protocol
1. Sector read: Sector read procedure after the card configured I/O interface is shown as follows.
Note:
If sector count is not equal to 1, the busy time (status is
“
DXH
”
) maybe only 1
μ
s, so if host handle step (3) by
polling status
“
DXH
”
then polling status
“
58H
”
, it could be generated
“
time out error
”
because it can not get
status
“
DXH
”
.
IOWR
D0~D15
IORD
IREQ
CE1
A0~A10
CE2
3H
7H
2H
0H
5H
4H
6H
7H
7H
0H
7H
7H
(4)
(5)
(2)
(1)
(3)
01H 20H D0H
→
58H (Data transfer)
D0H
→
50H
(4) Burst data transfer
N
(5) Read more sectors
(3) Polling until ready
N
Y
Y
N
I/O Access, INDEX=1
(2) Set read sector command
(1) Set the logical sector number
start
Set the cylinder low/high register
Set the head No. of drive head register
Set the sector number register
Set in sector count register
Set
“
20h
”
in command register
Read the status register
Read 256 times the data register
(512 bytes)
“
58h
”
“
51h
”
Get all data
error handle
Y
Wait the command input
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