Datasheet
2010 Microchip Technology Inc. DS39935C-page 113
ENC424J600/624J600
REGISTER 12-5: PHANA: PHY AUTO-NEGOTIATION ADVERTISEMENT REGISTER
R-0 R-0 R/W-0 R-0 R/W-0 R/W-0 R-0 R/W-1
ADNP
rADFAULTr ADPAUS1 ADPAUS0 rAD100FD
bit 15 bit 8
R/W-1 R/W-1 R/W-1 R/W-0 R/W-0 R/W-0 R/W-0 R/W-1
AD100 AD10FD AD10 ADIEEE4 ADIEEE3 ADIEEE2 ADIEEE1 ADIEEE0
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
ADNP: Advertise Next Page Ability bit
1 = Invalid
0 = Local PHY does not support auto-negotiation next page abilities
bit 14
Reserved: Read as ‘0’
bit 13
ADFAULT: Advertise Remote Fault Condition bit
1 = Local PHY has a Fault condition present
0 = Local PHY does not have a Fault condition present
bit 12
Reserved: Read as ‘0’
bit 11-10
ADPAUS<1:0>: Advertise PAUSE Flow Control Ability bits
11 = Local device supports both symmetric PAUSE and asymmetric PAUSE toward local device
10 = Local device supports asymmetric PAUSE toward link partner only
01 = Local device supports symmetric PAUSE only (Normal Flow Control mode)
00 = Local device does not support PAUSE flow control
bit 9
Reserved: Read as ‘0’
bit 8
AD100FD: Advertise 100Base-TX Full-Duplex Ability bit
1 = Local PHY is capable of 100Base-TX full-duplex operation
0 = Local PHY is incapable of 100Base-TX full-duplex operation
bit 7
AD100: Advertise 100Base-TX Half-Duplex Ability bit
1 = Local PHY is capable of 100Base-TX half-duplex operation
0 = Local PHY is incapable of 100Base-TX half-duplex operation
bit 6
AD10FD: Advertise 10Base-T Full-Duplex Ability bit
1 = Local PHY is capable of 10Base-T full-duplex operation
0 = Local PHY is incapable of 10Base-T full-duplex operation
bit 5
AD10: Advertise 10Base-T Half-Duplex Ability bit
1 = Local PHY is capable of 10Base-T half-duplex operation
0 = Local PHY is incapable of 10Base-T half-duplex operation
bit 4-0
ADIEEE<4:0>: Advertise IEEE Standard Selector Field bits
00001 = IEEE 802.3 Std.
All other values reserved by IEEE. Always specify a selector value of ‘
00001’ for this device.