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參數(shù)資料
| 型號(hào)： | AN246 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Transmission lines and terminations with Philips Advanced Logic families |
| 中文描述： | 傳輸線，并與飛利浦先進(jìn)邏輯家庭終端 |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 216K |
| 代理商： | AN246 |
Philips Semiconductors
Application Note
AN246
Transmission lines and terminations
with Philips Logic families
1998 Feb 05
10
SH00106
Figure 13. Reflections from source termination
Other Series Termination Schemes
Figure 14 shows a series termination used with a star stub topology.
Receiver B
Receiver A
Receiver C
Driver
R
S
Z
O
SH00118
R
S
= Z
O
– R
driver
Receiver D
Figure 14. Series termination with star stub routing
Stub electrical lengths should be very short, about 10% of the signal
edge, to prevent reflections. This method is useful for terminating
clocks and other asynchronous signals if stubs are of equal
length/delay. Terminating methods for some alternative star routing
is shown in Figure 15.
Driver
R
D
Z
O
Z
O
Z
O
R
S
Driver
R
D
Z
O
Z
O
Z
O
R
S
Equal delay branches
Unequal delay branches
R
S
R
S
R
S
= Z
O
/3 – R
D
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