參數(shù)資料
型號(hào): ML60851AGA
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): 26/45頁
文件大小: 358K
代理商: ML60851AGA
ML60851A
Semiconductor
32/44
DMA Transfer Timing (4)
ML60851A to Memory (Demand Transfer, Dual Address Mode)
Parameter
Symbol
Condition
Note
DREQ Disable Time
t1
CS Hold Time
t2
Read Data Delay Time
t3
t4
1
Unit
ns
Max.
Min.
25
Data Hold Time
Recovery Time
t5
2
ns
Load 20 pF
8-bit DMA
16-bit DMA
0
0
63
105
20
—3
Notes: 1. When in Dual Address mode, the DACK is ignored.
t3 is 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).
A7:A0
DREQ
CS
RD
DOUT
t3
t4
t2
t1
Last Packet Read
t5
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