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MCP2140-IP датащи(PDF) 53 Page - Microchip Technology |
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MCP2140-IP датащи(HTML) 53 Page - Microchip Technology |
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53 / 58 page ![]() 2003 Microchip Technology Inc. Preliminary DS21790A-page 53 MCP2140 APPENDIX D: DB-9 PIN INFORMATION Table D-1 shows the DB-9 pin information and the direction of the MCP2140 signals. The MCP2140 is designed for use in Data Communications Equipment (DCE) applications. TABLE D-1: DB-9 SIGNAL INFORMATION APPENDIX E: KNOW PRIMARY DEVICE COMPATIBILITY ISSUES Table E-1 show the known issues of Primary Devices interfacing to the MCP2140. TABLE E-1: PRIMARY DEVICE ISSUES DB-9 Pin No. Signal Direction Comment 1 CD HC → MCP2140 Carrier Detect 2 RX MCP2140 → HC Received Data 3 TX HC → MCP2140 Transmit Data 4 DTR HC → MCP2140 Data Terminal Ready 5 GND — Ground 6 DSR MCP2140 → HC Data Set Ready 7 RTS HC → MCP2140 Request to Send 8 CTS MCP2140 → HC Clear to Send 9 RI HC → MCP2140 Ring Indicator Legend: HC = Host Controller Primary Device Operating System Issue Result HP Jornada 720 HPC Pro/Windows CE™ 3.0 (Pocket PC) Jornada 720 transmits 0xFF (not 0xC0) for extra SOF (Start-of- Frame) characters during NDM. MCP2140 will not connect to the Jornada 720. Personal Computers Windows® 2000 (do not have list of which versions) The operating system will reset if an IR device ID of “null” is received. MCP2140 will not connect to the PC |
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