參數(shù)資料
型號: MB86967PFV
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces
中文描述: 1 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP80
封裝: PLASTIC, LQFP-80
文件頁數(shù): 106/129頁
文件大小: 1499K
代理商: MB86967PFV
106
MB86967
(17)Burst DMA Access Timing
(V
DD
= +5 V
±
5%, GND
= 0 V, Ta = 0
°
C to +70
°
C)
Parameter
Symbol
Value
Typ.
Unit
Min.
3
4
3
0
Max.
32
28
Hold time for DREQ output
Hold time for DMACK input (from IOR, IOW negate)
Hold time for DREQ output
Hold time for DMACK input (from EOP/EOP negate)
Setup time for DMACK input
t
1
t
2
t
3
t
4
t
5
ns
ns
ns
ns
ns
DREQ
DMACK
IOR, IOW
t
1
t
1
t
2
*2
*1
DREQ
DMACK
IOR, IOW
IOCHRDY
*1
t
5
t
2
t
1
t
2
*2
Burst DMA access timing (Exiting DMA from the MB86967)
*1: This transition goes low at a single cycle before the last DMA when DLCR4 bit 2 is 1.
*2: This transition goes low at the last cycle of DMA when DLCR4 bit 2 is 0.
Burst DMA access timing (When DMA is interrupted by DMACK input)
*1: IOCHRDY signal timing is identical as that of bus timing.
*2: Interrupt period for DMA transfer
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