![](http://datasheet.mmic.net.cn/390000/RTL8201CP_datasheet_16830999/RTL8201CP_14.png)
RTL8201CP
Datasheet
Single-Chip/Port 10/100 Fast Ethernet PHYceiver
9
Track ID: JATR-1076-21 Rev. 1.21
6.2. Register 1 Basic Mode Status Register
Table 10. Register 1 Basic Mode Status Register
Description
1: Enable 100Base-T4 support
0: Suppress 100Base-T4 support
1: Enable 100Base-TX full duplex support
0: Suppress 100Base-TX full duplex support
1: Enable 100Base-TX half duplex support
0: Suppress 100Base-TX half duplex support
1: Enable 10Base-T full duplex support
0: Suppress 10Base-T full duplex support
1: Enable 10Base-T half duplex support
0: Suppress 10Base-T half duplex support
The RTL8201CP will accept management frames with preamble
suppressed.
A minimum of 32 preamble bits are required for the first SMI
read/write transaction after reset. One idle bit is required
between any two management transactions as per IEEE 802.3u
specifications.
1: Auto-negotiation process completed
0: Auto-negotiation process not completed
1: Remote fault condition detected (cleared on read)
0: No remote fault condition detected
When in 100Base-FX mode, this bit means an in-band signal
Far-End-Fault has been detected. See 7.12 Far End Fault
Indication, page 22.
1: Link has not experienced fail state
0: Link experienced fail state
1: Valid link established
0: No valid link established
1: Jabber condition detected
0: No jabber condition detected
Extended Capability 1: Extended register capability
0: Basic register capability only
Address
1:15
Name
100Base-T4
Mode
RO
Default
0
1:14
100Base_TX_ FD
RO
1
1:13
100BASE_TX_HD
RO
1
1:12
10Base_T_FD
RO
1
1:11
10_Base_T_HD
RO
1
1:10~7
1:6
Reserved
MF Preamble
Suppression
RO
1
1:5
Auto Negotiation
Complete
Remote Fault
RO
0
1:4
RO
0
1:3
Auto Negotiation
RO
1
1:2
Link Status
RO
0
1:1
Jabber Detect
RO
0
1:0
RO
1
6.3. Register 2 PHY Identifier Register 1
Table 11. Register 2 PHY Identifier Register 1
Description
PHY identifier ID for software recognition of the RTL8201CP.
Address
2:15~0
Name
PHYID1
Mode
RO
Default
0000
6.4. Register 3 PHY Identifier Register 2
Table 12. Register 3 PHY Identifier Register 2
Description
PHY identifier ID for software recognition of the RTL8201CP.
Address
3:15~0
Name
PHYID2
Mode
RO
Default
8201