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MCP2120/MCP2150 Developer’s Kit User’s Guide
1.3.9
Disabling the MCP2150
Figure 1-10 shows the jumper (JP3) which will enable or disable the MCP2150 device.
When the MCP2150 is disabled, the device will consume less current.
FIGURE 1-10:
MCP2150 ENABLE/DISABLE
BT1
C8
Power
D3
R7
C5
R8
R9
D2 D5
R1
U5
C17
C7
C11
U3
D4
U2
Y1
R2 JP3
U4
R5 R6 C13
D1
J6
CR1
( MCP2150 )
Open=Enabled Component
R14
C15
C16
C12
R4 R3
Transceiver
J7 J8
R10
D6
JP2 JP1
C1
C4 C2
CD
Integrated
U6
C3
C10
U1
D7
JP2 JP1
0 0
0 1
1 0
1 1
BAUD
9600
19200
57600
115200
Transceiver
R11 R13 C16
J5
J4
J3
MCP2150 Dev Board
02-01609 Rev. 1
J2
J1
+5VGND
MCP2150 Enable/Disable
Enabled
Disabled
In most cases, this jumper will be open. It may be closed to test system operation
when the MCP2150 is disabled. The Host Controller board may control the operation
of the MCP2150 by connecting a signal to the JP3 header as shown in Figure 1-11.
FIGURE 1-11:
HOST CONTROLLER DISABLING THE MCP2150
MCP2150 Developer ’s Board
Host Controller
MCP2150
JP4
EN
I/O Pin
(High or Hi Impedance = Enabled
Low = Disabled)
DS51246C-page 16
? 2005 Microchip Technology Inc.
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