參數(shù)資料
型號(hào): ML60851ETB
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類: 總線控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP44
封裝: 10 X 10 MM, 0.80 MM PITCH, PLASTIC, TQFP-44
文件頁(yè)數(shù): 52/88頁(yè)
文件大?。?/td> 1137K
代理商: ML60851ETB
Oki Semiconductor
ML60851E
54/84
DMA Transfer Timing (2)
ML60851E to Memory (Single Transfer, Dual Address Mode)
Parameter
Symbol
Condition
Min.
Max.
Unit
Note
DREQ Disable Time
t1
Load 20 pF
20
ns
DREQ Enable Time
t2
63
ns
4
Read Data Delay Time
t3
Load 20 pF
25
ns
1
Data Hold Time
t4
Load 20 pF
0
25
ns
8-bit DMA
63
ns
2
Recovery Time
t5
16-bit DMA
105
ns
3
Notes: 1. When in Dual Address mode, the DACK is ignored.
t1 and t3 are defined depending on CS or RD which becomes active last.
A7:A0 specifies the FIFO address.
Refer to READ 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 t2 by setting the DMA interval register (DMAINTVL).
A7:A0
DREQ
t1
t3
t2
t5
t4
CS
RD
DOUT
DATA OUT
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