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| 型號： | 21050-AA |
| 英文描述： | PCI Bus Interface/Controller |
| 中文描述： | PCI總線接口/控制器 |
| 文件頁數(shù)： | 11/15頁 |
| 文件大小： | 92K |
| 代理商： | 21050-AA |
21050 PCI-to-PCI Bridge Hardware Implementation
Application Note
11
Use these pins to block forwarding of interrupts until all posted write data is flushed. You can do
this by enabling and disabling write posting dynamically by setting the Disable Posting bit in the
21050 configuration space and controlling the s_dispst_l pin.
Although use of the data synchronization pins is not specified,
Figure 2
is an example of a possible
implementation. This example assumes that an interrupt edge from a device causes s_dispst_l to
assert to the 21050, marking any posted write data and disabling write posting. As soon as the
marked write data is flushed, indicated by the deassertion of s_bufne_l, the interrupt is forwarded
and s_dispst_l deasserts, enabling write posting again. Note that s_bufne_l is not valid until two
cycles after the s_dispst_l assertion. Interrupt deassertion is always forwarded immediately. You
can implement this logic in an external PAL. In this application the Disable Posting bit must be set.
During initialization, set the Disable Posting bit in the 21050 implementation-specific
configuration space.
Figure 2. Data Synchronization Implementation Example
A4885-01
s_dispst_1 = 1
fwd_int = 0
s_dispst_1 = 0
fwd_int = 0
s_dispst_1 = 1
fwd_int = 0
s_dispst_1 = 1
fwd_int = 0
s_dispst_1 = 1
fwd_int = 0
IDLE
NOT ANY_INT_EDGE
NOT ANY_INT
ANY_INT_EDGE
G_BUFNE_L
NOT S_BUFNE_L
ANY_INT
ASS_
DP
WAIT_
BNE
SAMPLE
_BNE
FWD_
INT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 21052-AA | PCI Bus Interface/Controller |
| 21052-AB | PCI Bus Interface/Controller |
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| 210602 | KABEL PROFI 3FACH KOAX 75 OHM GRAU 100M |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 21050AB | 功能描述:IC PCI-PCI BRIDGE 208QFP RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:2 通道 I²C 多路復(fù)用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| 21050-AB | 制造商:Intel 功能描述:IC,BUS CONTROLLER,CMOS,QFP,208PIN |
| 21050D401R00JE | 制造商:OHMITE 制造商全稱:Ohmite Mfg. Co. 功能描述:Dividohm? Vitreous Enamel Adjustable Power |
| 21050D401R00KE | 制造商:OHMITE 制造商全稱:Ohmite Mfg. Co. 功能描述:Dividohm? Vitreous Enamel Adjustable Power |
| 21050D40250RJE | 制造商:OHMITE 制造商全稱:Ohmite Mfg. Co. 功能描述:Dividohm? Vitreous Enamel Adjustable Power |
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