參數(shù)資料
型號: DZPD6722VCCE
廠商: INTEL CORP
元件分類: 總線控制器
英文描述: ISA-to-PC-Card (PCMCIA) Controllers
中文描述: PCMCIA BUS CONTROLLER, PQFP208
封裝: LQFP-208
文件頁數(shù): 117/138頁
文件大?。?/td> 723K
代理商: DZPD6722VCCE
ISA-to-PC-Card (PCMCIA) Controllers
PD6710/
22
Datasheet
117
t
7
System TC (-VPP_VALID high) to -IOWR
40
ns
t
8
-IOWR to begin of card TC (-WE)
4
25
50
ns
t
9
End of card TC (-WE) to -IOWR inactive
4
25
50
ns
Figure 28. DMA Read Cycle Timing
Table 36. DMA Read Cycle Timing (PD6722 only)
(Sheet 2 of 2)
Symbol
Parameter
MIN
MAX
Units
1. The Setup time is determined by the value programmed into the
Setup Timing
register, index 3Ah/3Dh. Using the Timer Set
0 default value of 01h, the setup time would be 70 ns. S = (N
pres
×
N
val
+ 1), see
PC Card Bus Timing Calculations
on
page 109
.
2. The Command time is determined by the value programmed into the
Command Timing
register, index 3Bh/3Eh. Using the
Timer Set 0 default value of 06h, the Command time would be 270 ns. C = (N
×
N
val
+ 1), see page
109
.
3. The Recovery time is determined by the value programmed into the
Recovery Timing
register, index 3Ch/3Fh. Using the
Timer Set 0 default value of 03h, the hold (Recovery) time would be 150 ns. R = (N
pres
×
N
val
+ 1), see page
109
.
4. Based on an internal clock period of 40 ns (25 MHz).
-CE[2:1]
t
2
t
3
t
5
t
4
-WAIT
DMA DATA[15:0]
-VPP_VALID
(TC from system)
t
6
-IOWR
to card
IRQ9
-IORD, -OE
(high)
-REG
(DACK*)
(DACK* to card)
t
1
t
7
-WE
(TC to card)
t
8
t
9
IRQ10
(DRQ)
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