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ENC424J600 Datasheet(PDF) 32 Page - Microchip Technology |
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ENC424J600 Datasheet(HTML) 32 Page - Microchip Technology |
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32 / 168 page  ENC424J600/624J600 DS39935C-page 30 2010 Microchip Technology Inc. REGISTER 3-2: MICMD: MII MANAGEMENT COMMAND REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 — — — — — — — — bit 15 bit 8 U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0 — — — — — — MIISCAN MIIRD bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 15-2 Unimplemented: Read as ‘0’ bit 1 MIISCAN: MII Scan Enable bit 1 = PHY register designated by MIREGADR<4:0> is continuously read and the data is copied to MIRD 0 = No MII Management scan operation is in progress bit 0 MIIRD: MII Read Enable bit 1 = PHY register designated by MIREGADR<4:0> is read once and the data is copied to MIRD 0 = No MII Management read operation is in progress REGISTER 3-3: MISTAT: MII MANAGEMENT STATUS REGISTER U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0 — — — — — — — — bit 15 bit 8 U-0 U-0 U-0 U-0 R-0 R-0 R-0 R-0 — — — — r NVALID SCAN BUSY bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 15-4 Unimplemented: Read as ‘0’ bit 3 Reserved: Ignore on read bit 2 NVALID: MII Management Read Data Not Valid Status bit 1 = The contents of MIRD are not valid yet 0 = The MII Management read cycle has completed and MIRD has been updated bit 1 SCAN: MII Management Scan Status bit 1 = MII Management scan operation is in progress 0 = No MII Management scan operation is in progress bit 0 BUSY: MII Management Busy Status bit 1 = A PHY register is currently being read or written to 0 = The MII Management interface is Idle |
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