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: 9/116页
文件大小: 1442K
代理商: SPD6729QCE
PD6729 — PCI-to-PC Card (PCMCIA) Controller
106
Datasheet
Figure 20. Normal Byte Read/Write Timing (that is, all other byte
accesses, including odd I/O cycles where -IOIS16 is low)
Table 29. 16-Bit System to 8-Bit I/O Card: Odd Byte Timing
Symbol
Parameter
MIN
MAX
Units
t1
Address change to -IOIS16 inactive4
(3Tcp) + 20
ns
t2
-IOIS16 inactive to -CE2 inactive
20
ns
t3
-IOIS16 inactive to -CE1 active
20
ns
t4
Address setup to Command active1
(S
× Tcp) – 20
ns
t5
Command pulse width2
(C
× Tcp) – 20
ns
t6
Address hold from Command inactive3
(R
× 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.
4. -IOIS16 level from card must be valid within 3 clocks of an address change to the card.
-REG,
-IOWR, -IORD,
t1
t2
t3
-CE1
A[25:0]
-CE2
D[7:0]
Odd/Even Data
D[15:8]
XX
-OE, -WE
Write Cycle
Read or
Write Cycle
D[7:0]
Read Cycle
Odd/Even Data
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