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ASIX ELECTRONICS CORPORATION
38
AX88796 L 3-in-1 Local Bus Fast Ethernet Controller
5.1.14 Test Register (TR) Offset 15H (Read)
FIELD
NAME
7:4
-
Reserved
3
RST_TX
B
in reset.
2
RST_10B 10BASE-T in Reset : This signal indicates that 10BASE-T logic of internal PHY is in reset.
1
RST_B Reset Busy : This signal indicates that internal PHY is in reset.
0
AUTOD Autonegotiation Done : This signal goes high whenever internal PHY autonegotiation has
completed. It will go low if autonegotiation has to restart.
DESCRIPTION
100BASE-TX in Reset : This signal indicates that 100BASE-TX logic of internal PHY is
5.1.15 General Purpose Input Register (GPI) Offset 17H (Read)
FIELD
NAME
7
-
Reserved
6
GPI2
This register reflects GPI[2] input value. May connect to external PHY speed status.
5
GPI1
This register reflects GPI[1] input value. May connect to external PHY duplex status.
4
GPI0
This register reflects GPI[0] input value. May connect to external PHY link status.
3
-
Reserved
2
I_SPD This register reflects internal PHY speed status value. Logic one means 100Mbps
1
I_DPX This register reflects internal PHY duplex status value. Logic one means full duplex.
0
I_LINK This register reflects internal PHY link status value. Logic one means link ok.
DESCRIPTION
5.1.16 GPO and Control (GPOC) Offset 17H (Write)
FIELD
NAME
7
-
Reserved
6
PPDSET Internal PHY Power Down Setting:
Default “0”, Internal PHY is in normal operation mode
Write PPDSET to “1” force Internal PHY into power down mode
5
MPSET Media Set by Program : The signal is valid only when MPSEL is set to high.
When MPSET is logic 0 , internal PHY is selected.
When MPSET is logic 1 , external MII PHY is selected.
4
MPSEL Media Priority Select :
MPSEL I_LINK GPI0 Media Selected
0 1 0 Internal PHY
0 1 1 Internal PHY
0 0 0 External MII PHY
0 0 1 Internal PHY
1 X X Depend on MPSET bit
3:1
-
Reserved
0
/GPO0 Default “0”. The register reflects to GPO[0] pin with inverted value.
DESCRIPTION