参数资料
型号: DM163008
厂商: Microchip Technology
文件页数: 16/54页
文件大小: 0K
描述: KIT MCP2120/2150 FOR IRDA COMM
标准包装: 1
MCP2120/MCP2150 Developer’s Kit User’s Guide
1.3.5
Disabling the MCP2120
Figure 1-5 shows the jumper, JP4, which will enable or disable the MCP2120 device.
When the MCP2120 is disabled, the device will consume less current.
FIGURE 1-5:
MCP2120 ENABLE/DISABLE
R9
D3
D6 D2
U2
C11
R15
C18
C6
R3
J5
C10
U4
R4
D4
C15
CR1
C4
C7
JP4
( MCP2120 )
Open=Enabled
R5
R10 R11
Component
D1
C12
C13
C14
C8
R8
R7
R6
Transceiver
J6 J7
R12
D5
JP5 R1
C9
R14
Q1
R2
U3
C2
JP3:JP1
000 =F OSC /768
001 =F OSC /384
Integrated
Transceiver
U6
J2
C5
C1
U1
C3
010 =F OSC /192
011 =F OSC /128
100 =F OSC /64
111 =S/W Baud
Open=0
R13
C16
J4
MCP2120 Developer’s Board
02-01608 Rev. 1
J1
J3
+5V
GND
MCP2120 Enable/Disable
Enabled
Disabled
In most cases, this jumper will be open. It may be closed to test system operation when
the MCP2120 is disabled. The Host Controller board may control the operation of the
MCP2120 by connecting a signal to the JP4 header as shown in Figure 1-6.
FIGURE 1-6:
HOST CONTROLLER DISABLING THE MCP2120
MCP2120 Developer ’s Board
Host Controller
MCP2120
JP4
EN
I/O Pin
(High or Hi Impedance = Enabled
Low = Disabled)
DS51246C-page 12
? 2005 Microchip Technology Inc.
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