參數資料
型號: ML60852
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: USB Device Controller
中文描述: USB設備控制器
文件頁數: 79/81頁
文件大?。?/td> 451K
代理商: ML60852
PEDL60852-01
1
Semiconductor
ML60852
79/81
DMA Transfer Timing (8)
Memory to ML60852 (Demand Transfer, Dual Address Mode)
Parameter
Symbol
t
1
t
2
t
3
t
4
t
5
Condition
Load 20 pF
FIFO WRITE
Min.
42
0
30
5
63
Max.
20
Unit
ns
ns
ns
ns
ns
ns
Note
DREQ
Disable Time
FIFO Access Time
CS
Hold Time
Write Data Setup Time
Write Data Hold Time
(1)
8-bit DMA
(2)
Recovery Time
t
6
16-bit DMA
105
ns
(3)
Notes: (1) When in Dual Address mode, the DACK is ignored.
A7: A0 specifies the FIFO address.
Refer to WRITE Timing (1) for Address Setup Time and Address Hold Time.
t
2
is defined depending on
CS
or
WR
which becomes active last.
(2) 3-clock time of oscillation clock (clock period: 21 ns).
(3) 5-clock time of oscillation clock (clock period: 21 ns).
DREQ
DIN
WR
CS
A7: A0
t
4
t
3
t
5
t
6
t
2
t
1
(Note) Refer to the previous page.
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