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MCP2120 датащи(PDF) 20 Page - Microchip Technology |
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MCP2120 датащи(HTML) 20 Page - Microchip Technology |
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20 / 64 page ![]() MCP2120/MCP2150 USER’S GUIDE DS51246A-page 16 2001 Microchip Technology Inc. 2.3.2.3 Disabling the MCP2150 Figure 2.10 shows the jumper (JP3) which will enable or disable the MCP2150 device. When the MCP2150 is disabled, the device will consume less current. Figure 2.10: MCP2150 Enable/Disable 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 2.11. Figure 2.11: Host Controller Disabling the MCP2150 MCP2150 Enable/Disable Disabled Enabled MCP2150 Dev Board 02-01609 Rev. 1 J1 J4 +5VGND J3 J2 R11 C16 Integrated Transceiver R13 JP2 JP1 BAUD 0 0 1 1 0 1 0 1 9600 19200 57600 115200 Component Transceiver J8 J7 U5 J6 J5 BT1 C17 D4 C15 CR1 C16 C12 U2 Y1 C1 C4 C2 C3 U1 C10 D7 CD R2 JP3 (MCP2150) Open=Enabled R4 R3 JP2 JP1 C8 C7 D3 R7 Power C5 U4 R5 C11 R9 R8 D2D5 R1 U3 R6 C13 R14 R10 D1 D6 U6 JP4 MCP2150 EN I/O Pin MCP2150 Developer’s Board Host Controller (High or Hi Impedance = Enabled Low = Disabled) |
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