Datasheet
2009-2013 Microchip Technology Inc. DS60001156H-page 323
PIC32MX5XX/6XX/7XX
REGISTER 24-32: EMAC1MCMD: ETHERNET CONTROLLER MAC MII MANAGEMENT COMMAND
REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
23:16
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
15:8
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
7:0
U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0
— — — — — —SCANREAD
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 31-2 Unimplemented: Read as ‘0’
bit 1 SCAN: MII Management Scan Mode bit
1 = The MII Management module will perform read cycles continuously (for example, useful for monitoring
the Link Fail)
0 = Normal Operation
bit 0 READ: MII Management Read Command bit
1 = The MII Management module will perform a single read cycle. The read data is returned in the
EMAC1MRDD register
0 = The MII Management module will perform a write cycle. The write data is taken from the EMAC1MWTD
register
Note: Both 16-bit and 32-bit accesses are allowed to these registers (including the SET, CLR and INV registers).
8-bit accesses are not allowed and are ignored by the hardware.