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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LAN8741Ai-EN датащи(PDF) 46 Page - Microchip Technology |
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LAN8741Ai-EN датащи(HTML) 46 Page - Microchip Technology |
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46 / 106 page  LAN8741A/LAN8741Ai DS00001988A-page 46 2013-2015 Microchip Technology Inc. 4.2.1 BASIC CONTROL REGISTER Note 1: The default value of this bit is determined by the MODE[2:0] configuration straps. Refer to Section 3.7.2, "MODE[2:0]: Mode Configuration" for additional information. Index (In Decimal): 0 Size: 16 bits Bits Description Type Default 15 Soft Reset 1 = Software reset. Bit is self-clearing. When setting this bit do not set other bits in this register. Note: The configuration (as described in Section 3.7.2, "MODE[2:0]: Mode Configuration") is set from the register bit values, and not from the mode pins. R/W SC 0b 14 Loopback 0 = Normal operation 1 = Loopback mode R/W 0b 13 Speed Select 0 = 10 Mbps 1 = 100 Mbps Note: Ignored if auto-negotiation is enabled (0.12 = 1). R/W (see Note 1) 12 Auto-Negotiation Enable 0 = Disable auto-negotiate process 1 = Enable auto-negotiate process (overrides 0.13 and 0.8) R/W (see Note 1) 11 Power Down 0 = Normal operation 1 = General power down mode R/W 0b 10 Isolate 0 = Normal operation 1 = Electrical isolation of PHY from the MII/RMII R/W 0b 9 Restart Auto-Negotiate 0 = Normal operation 1 = Restart auto-negotiate process Note: Bit is self-clearing. R/W SC 0b 8 Duplex Mode 0 = Half duplex 1 = Full duplex Note: Ignored if Auto-Negotiation is enabled (0.12 = 1). R/W (see Note 1) 7 Collision Test 0 = Disable COL test 1 = Enable COL test R/W 0b 6:0 RESERVED RO - |
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