參數(shù)資料
型號: ML60851D
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: USB Device Controller
中文描述: USB設(shè)備控制器
文件頁數(shù): 57/82頁
文件大?。?/td> 705K
代理商: ML60851D
ML60851D
Semiconductor
57/82
PEDL60851D-01
DMA Transfer Timing (6)
Memory to ML60851D (Single Transfer, Dual Address Mode)
Parameter
Symbol
t
1
t
2
t
3
Condition
Load 20 pF
Note
DREQ
Disable Time
DREQ
Enable Time
FIFO Access Time
Write Data Setup Time
Write Data Hold Time
Unit
ns
ns
ns
ns
ns
ns
ns
Max.
20
63
Min.
42
t
4
t
5
Recovery Time
t
6
30
2
63
105
2
3
8-bit DMA
16-bit DMA
1
FIFO WRITE
4
t
2
t
3
t
4
t
5
A7:A0
DREQ
CS
WR
DIN
t
6
t
1
Notes: 1. When in Dual Address mode, the DACK is ignored.
t
1
and t
3
are defined depending on
CS
or
WR
which becomes active last.
Refer to WRITE Timing (1) for Address Setup Time and Address Hold Time.
2. 3-clock time of oscillation clock (clock period: 21 ns).
3. 5-clock time of oscillation clock (clock period: 21 ns).
4. It is possible to increase t
2
by setting the DMA interval register (DMAINTVL).
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