ICS1890Y ICST [Integrated Circuit Systems], ICS1890Y Datasheet - Page 19

• Manufacturer Part Number: ICS1890Y
• Description: 10Base-T/100Base-TX Integrated PHYceiver-TM
• Manufacturer: ICST [Integrated Circuit Systems]

Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
Loopback
Data Rate
Auto-Negotiation Enable
Power-Down
Isolate
Restart Auto-Negotiation
Duplex Mode
Collision Test
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Definition
no effect
disable loop back mode
10 Mb/s operation
disable Auto-Negotiation
normal mode
no effect
no effect
half duplex
no effect
always 0
always 0
always 0
always 0
always 0
always 0
always 0
When bit=0
reset the PHY
enable loop back mode
100 Mb/s operation
enable Auto-Negotiation
reduced power
consumption
isolate PHY from MII
restart Auto-Negotiation
full duplex
enable collision signal test
When bit=1
RW/SC
Access
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
Address > 0
Address=0
0 if PHY
1 if PHY
Default
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
Hex
0*
3
0
0