參數(shù)資料
型號: ML60851CGA
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: 9 X 10 MM, 0.80 MM PITCH, PLASTIC, QFP-44
文件頁數(shù): 49/67頁
文件大小: 389K
代理商: ML60851CGA
ML60851C
Semiconductor
53/67
PEDL60851C-02
DMA Transfer Timing (2)
ML60851C to Memory (Single Transfer, Dual Address Mode)
Parameter
Symbol
Condition
Note
DREQ Disable Time
t1
DREQ Enable Time
t2
Read Data Delay Time
t3
t4
1
Unit
ns
Max.
Min.
—20
25
Data Hold Time
Recovery Time
t5
2
ns
63
Load 20 pF
8-bit DMA
16-bit DMA
0
105
63
25
—3
4
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).
t2
t4
t3
t1
A7:A0
DREQ
CS
RD
DOUT
t5
DATA OUT
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