參數(shù)資料
型號: MPC7455
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: RISC Microprocessor Hardware Specifications
中文描述: RISC微處理器硬件規(guī)格
文件頁數(shù): 50/64頁
文件大?。?/td> 1127K
代理商: MPC7455
MPC7455 RISC Microprocessor Hardware Specifications, Rev. 4.1
50
Freescale Semiconductor
System Design Information
R
P
is trimmed until the voltage at the pad equals OV
DD
/2. R
P
then becomes the resistance of the pull-up devices. R
P
and R
N
are designed to be close to each other in value. Then, Z
0
= (R
P
+ R
N
)/2.
Figure 25. Driver Impedance Measurement
OV
DD
OGND
R
P
R
N
Pad
Data
SW1
SW2
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