LAN9353 Datasheet, PDF (153/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
9.2.20.22 PHY x Special Control/Status Register (PHY_SPECIAL_CONTROL_STATUS_x)
Index (decimal): 31
Size:
16 bits
This read/write register is used to control and monitor various options of the PHY.
Bits
Description
15:13
12
RESERVED
Autodone
This bit indicates the status of the Auto-Negotiation on the PHY.
0: Auto-Negotiation is not completed, is disabled, or is not active
1: Auto-Negotiation is completed
11:5 RESERVED - Write as 0000010b, ignore on read
4:2 Speed Indication
This field indicates the current PHY speed configuration.
STATE
000
001
010
011
100
101
110
111
RESERVED
10BASE-T Half-duplex
100BASE-TX Half-duplex
RESERVED
RESERVED
10BASE-T Full-duplex
100BASE-TX Full-duplex
RESERVED
DESCRIPTION
1:0 RESERVED
Type
RO
RO
Default
-
0b
R/W
0000010b
RO
XXXb
RO
0b
 2015 Microchip Technology Inc.
DS00001925A-page 153