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參數(shù)資料
| 型號： | AN1816 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | USING THE HC912B32 TO IMPLEMENT THE DISTRIBUTED SYSTEMS INTERFACE (DSI) PROTOCOL |
| 中文描述： | 使用本HC912B32為實(shí)施分布式系統(tǒng)接口（DSI）協(xié)議 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 332K |
| 代理商： | AN1816 |
AN1816
11
HARDWARE DESIGN
Slave Board
The slave board discussed in this application note is one that was
designed as part of a DSI evaluation tool kit. It contains the Bus
Evaluation Module (BEM) IC, which is a slave DSI interface evaluation
device. It provides bi-directional communications from the DSI bus. The
slave board contains an on board potentiometer which can be used to
vary the voltage input to the BEM IC. This voltage is converted by the
BEM IC to a digital signal that is then transmitted over the DSI bus.
Alternatively, an accelerometer or other analogue output device could be
connected using the wire wrap area of the slave board and the jumper
setting changed such that the output of the accelerometer is input to the
BEM IC. Multiple slave nodes can be attached to one DSI bus by daisy
chaining them together.
Schematics and
Layout
Considerations -
Slave Board
Figure 11 Slave Board Schematic
Date: August 10, 1999 Sheet 1 of 1
Size Document Number
B
REV
SLAVE.SCH
Title
SLAVE BOARD
OCCUPANT SAFETY SYSTEMS
DATE
DESCRIPTION
REV
R E V I S I O N S
SLAVE BOARD
Bus signals from ECU
GND
VR1
1
2
3
J1
D1
DIODE ZN1
GND
BUSGND
BUS_OUT
CON3WAY
1
2
3
U3
SVREG
BUSOUT
BUSIN
TP1
TEST POINT
TP2
TEST POINT
TP3
TEST POINT
TP4
TEST POINT
C2
4.7uF
BUS_OUT
16
VREG
10
N/C
9
8
BUS_IN
BUS_GND
BUS_GND
14
1
AGND
5
6
2
4
SIG_IN
7
FILT_CAP
11
N/C
N/C
3
13
N/C
15
U4
BEM IC
D2
1
2
R2
10K
GND
1
2
R1
10K
GND
1
2
C3
0.1uF
GND
GND
C1
GND
COMPUTER GENERATED DRAWING : DO NOT REVISE MANUALLY
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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