參數(shù)資料
型號: 21145
廠商: Intel Corp.
英文描述: Phoneline/Ethernet LAN Controller(電話線/以太網(wǎng)LAN控制器)
中文描述: 電話線/以太網(wǎng)控制器(電話線/以太網(wǎng)局域網(wǎng)控制器)
文件頁數(shù): 40/50頁
文件大?。?/td> 624K
代理商: 21145
21145
34
Preliminary
Datasheet
3.12.2
Expansion ROM Write Timing
Figure 16
shows the expansion ROM write timing characteristics, and
Table 32
lists the expansion
ROM write timing limits.
Table 31. Expansion ROM Read Timing Specifications
Symbol
Parameter
Minimum
Maximum
Unit
T
avav
Read cycle time
240
ns
T
avqv
Address to output delay
220
ns
T
elqv
br_ce_l to output delay
220
ns
T
elqx
br_ce_l to output low impedance
0
ns
T
ehqz
br_ce_l going high to output high impedance
2
pci_clk
T
oh
Output hold from br_ce_l change
0
ns
T
ads
Address setup to latch enable high
10
ns
T
adh
Address hold from latch enable high
10
ns
Figure 16. Expansion ROM Write Timing Diagram
Table 32. Expansion ROM Write Timing Specifications (Sheet 1 of 2)
Symbol
1
Parameter
Minimum
Unit
T
avav
Write cycle time
210
ns
T
eleh
br_ce_l pulse width
210
ns
T
aveh
Address setup to br_ce_l going high
50
ns
T
dveh
Data setup to br_ce_l going high
50
ns
A6458-01
Tads
Aoe=1, we=0
Data<7:0>
Address<0>
Address<16>
Address<17>
Address=<15:8>
Tadh
Tads
Tadh
Taveh
Tavav
Tdveh
Teleh
Tehax
Tehdx
br_ad<7:0>
br_a<1>
br_a<0>
br_ce_l
Address<1>
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