參數(shù)資料
型號(hào): SDCFBI-30-101
廠商: SANDISK CORP
元件分類: 存儲(chǔ)控制器/管理單元
英文描述: FLASH MEMORY DRIVE CONTROLLER, XMA50
封裝: PC CARD-50
文件頁數(shù): 66/124頁
文件大?。?/td> 769K
代理商: SDCFBI-30-101
CompactFlash Memory Card Product Manual
SanDisk CompactFlash Memory Card Product Manual 1999 SANDISK CORPORATION
46
4.6
Common Memory Transfer Function
4.6.1
Common Memory Function
The Common Memory transfer to or from t h e
CompactFlash Memory Card can be either 8 or 16
bits.
The CompactFlash Memory Card permits both 8
and 16 bit accesses to all of its Common Memory
addresses.
The CompactFlash Memory Card may request t h e
host to extend the length of a memory write cycle
or extend the length of a memory read cycle until
data is ready by asserting the -WAIT signal a t
the start of the cycle.
Table 4-16 Common Memory Function
Function Code
-REG
-CE2
-CE1
A 0
- O E
- W E
D15-D8
D7-D0
Standby Mode
X
H
X
High Z
Byte ReadAccess
(8 bits)
H
L
H
L
H
High Z
Even-Byte
Odd-Byte
Byte Write Access
(8 bits)
H
L
H
L
Don't Care
Even-Byte
Odd-Byte
Word Read Access
(16 bits)
H
L
X
L
H
Odd-Byte
Even-Byte
Word Write Access
(16 bits)
H
L
X
H
L
Odd-Byte
Even-Byte
Odd Byte Read Only
(8 bits)
H
L
H
X
L
H
Odd-Byte
High Z
Odd Byte Write Only
(8 bits)
H
L
H
X
H
L
Odd-Byte
Don't Care
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