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參數(shù)資料
| 型號(hào)： | MCP2150 |
| 廠(chǎng)商： | Microchip Technology Inc. |
| 英文描述： | DEVELOPER’S KIT USER’S GUIDE |
| 中文描述： | 開(kāi)發(fā)人員包用戶(hù)指南 |
| 文件頁(yè)數(shù)： | 12/64頁(yè) |
| 文件大?。?/td> | 2573K |
| 代理商： | MCP2150 |
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MCP2120/MCP2150 USER’S GUIDE
DS51246A-page 8
2001 Microchip Technology Inc.
2.3.1.1
Selecting UART Source and Optical Transceiver
Interface
Figure 2.2 shows two pairs of jumpers used to route signals to and from the
MCP2120.
Jumpers J1 and J4 are used to determine the source of the signals used by
the UART interface. When the header has the pins closest to the “DB9” label
jumpered to the center pin, the DB9 is the source of the UART signal. When
the header has the pins closest to the “Header” label jumpered to the center
pin, the four-pin header is the source of the UART signal.
Jumpers J6 and J7 are used to determine the source and destination of the
infrared data signals used by the interface between the MCP2120 and Optical
Transceiver. When the header has the pins closest to the “Integrated
Transceiver” label jumpered to the center pin, the integrated transceiver is
used. When the header has the pins closest to the “Component Transceiver”
label jumpered to the center pin, the component transceiver logic is used.
Figure 2.2: MCP2120 Selecting Sources
U
J5
D4
C15
C12
C13
C14
C9
C5
C1
J2
MCP2120
Developer’s Board
02-01608 Rev. 1
U1
D
J1
J4
R14
CR1
C4
C7
C8
R1
Q1
JP5
U3
R2
C2
C3
H
R
T
M
R
J3
+5V
GND
R13
C16
JP3:JP1
000
=F
OSC
/768
001
=F
OSC
/384
010
=F
OSC
/192
011
=F
OSC
/128
100
=F
OSC
/64
=S/W Baud
Open=0
Integrated
Transceiver
U6
R8
R7
R6
R4
JP4
(
MCP2120
)
Open=Enabled
R9
D3
Y
D6 D2
U2
C6
R3
C10
U4
R5
R11
R10
C
Component
Transceiver
J6
J7
R12
D1
D5
C18
R15
C11
These two jumpers select the
source of the Host signals.
J1 and J4
Header is source.
DB9 is source.
These two jumpers select the
optical transceiver logic. Both jumpers
should connect the same pin positions
Component Transceiver
Integrated Transceiver
J6 and J7
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