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SPD6722QCCE 参数 Datasheet PDF下载

SPD6722QCCE图片预览
型号: SPD6722QCCE
PDF下载: 下载PDF文件 查看货源
内容描述: ISA到PC卡( PCMCIA )控制器 [ISA-to-PC-Card (PCMCIA) Controllers]
分类和应用: 总线控制器微控制器和处理器PC
文件页数/大小: 138 页 / 837 K
品牌: INTEL [ INTEL ]
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ISA-to-PC-Card (PCMCIA) Controllers PD6710/22  
16.4.5.1  
PC Card Socket Timing  
Table 31. Memory Read/Write Timing (Word Access)  
Symbol  
Parameter  
MIN  
MAX  
Units  
-CE[2:1], -REG, Address, and Write Data setup to Command  
active1  
t
(S × Tcp) 10  
ns  
1
t
t
t
t
t
t
t
Command pulse width2  
(C × Tcp) 10  
(R × Tcp) 10  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
2
3
4
5
6
7
8
Address hold and Write Data valid from Command inactive3  
-WAIT active from Command active4  
Command hold from -WAIT inactive  
Data valid from -WAIT inactive  
(C 2)Tcp 10  
(2 Tcp) + 10  
Tcp + 10  
Data setup before -OE inactive  
(2 Tcp) + 10  
0
Data hold after -OE inactive  
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  
page 109.  
× N + 1), see PC Card Bus Timing Calculationson  
pres  
val  
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 + 1), see page 109.  
pres  
val  
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 × N + 1), see page 109.  
pres  
val  
4. For typical active timing programmed at 280 ns, maximum -WAIT timing is 190 ns after Command active.  
Figure 23. Memory Read/Write Timing  
-REG, -CE[2:1],  
A[25:0]  
t1  
t3  
t2  
-OE, -WE  
-WAIT  
t5  
t4  
D[15:0]  
Write Cycle  
t6  
t8  
t7  
D[15:0]  
Read Cycle  
Datasheet  
111  
 
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