参数资料
型号: SPD6729QCE
厂商: INTEL CORP
元件分类: 总线控制器
英文描述: PCMCIA BUS CONTROLLER, PQFP208
封装: MQFP-208
文件页数: 5/116页
文件大小: 1442K
代理商: SPD6729QCE
PD6729 — PCI-to-PC Card (PCMCIA) Controller
102
Datasheet
13.3.4
PCMCIA Bus Timing
Table 25. Memory Read/Write Timing
Symbol
Parameter
MIN
MAX
Units
t1
-REG, -CE[2:1], Address, and Write Data setup to Command
active1
(S
× Tcp) 20
ns
t2
Command pulse width2
(C
× Tcp) 20
ns
t3
Address hold and Write Data valid from Command inactive3
(R
× Tcp) 30
ns
t4
-WAIT active from Command active
(C
2)Tcp 30
ns
t5
Command hold from -WAIT inactive
2 Tcp
ns
t6
Data setup before -OE inactive
(2 Tcp) + 20
ns
t7
Data hold after -OE inactive
0
ns
t8
Data valid from -WAIT inactive
Tcp + 20
ns
NOTES:
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 100 ns. S = (Npres × Nval + 1), see “PCMCIA Bus Timing Calculations” on
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 05h, the Command time would be 340 ns. C = (Npres × Nval + 1), see page 101.
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 00h, the hold (Recovery) time would be 30 ns. R = (Npres × Nval + 1), see page 101.
Figure 17. Memory Read/Write Timing
-REG, -CE[2:1],
t1
t2
t4
t3
-WAIT
t6
D[15:0]
t7
t5
A[25:0]
-OE, -WE
t8
Write Cycle
Read Cycle
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