參數(shù)資料
型號: 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
文件頁數(shù): 58/88頁
文件大?。?/td> 1137K
代理商: ML60851ETB
Oki Semiconductor
ML60851E
59/84
DMA Transfer Timing (7)
Memory to ML60851E (Demand Transfer, Single Address Mode)
Parameter
Symbol
Condition
Min.
Max.
Unit
Note
DREQ Disable Time
t1
Load 20 pF
20
ns
FIFO Access Time
t2
FIFO WRITE
42
ns
1
DACK Hold Time
t3
0
ns
Write Data Setup Time
t4
30
ns
Write Data Hold Time
t5
2
ns
8-bit DMA
63
ns
2
Recovery Time
t6
16-bit DMA
105
ns
3
Notes: 1. When in Single Address mode, A7:A0 and
CS are ignored.
t2 is defined depending on DACK 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)
(Note) The last Write to reach the byte size (maximum packet size) specified by the EP1 Payload
Register.
To terminate DMA transfer before reaching the maximum packet size, set EP1 Packet Ready by
writing “1” to the EP1 Endpoint Packet Ready bit.
DREQ
DACK
WR
t2
t6
t1
t3
Last Packet Write
(Note)
t4
t5
DIN
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