RTL8139DL
Datasheet
Single Chip Multifunction 10/100 Ethernet Controller w/Power Management
26
Track ID: JATR-1076-21 Rev. 1.2
5.19. Basic Mode Status Register
(Offset 0064h-0065h, R)
Bit
Name
Description/Usage
Default/Attribute
15
100Base-T4
1 = enable 100Base-T4 support; 0 = suppress 100Base-T4 support.
0, RO
14
100Base_TX_ FD 1 = enable 100Base-TX full duplex support;
0 = suppress 100Base-TX full duplex support.
1, RO
13
100BASE_TX_HD 1 = enable 100Base-TX half-duplex support;
0 = suppress 100Base-TX half-duplex support.
1, RO
12
10Base_T_FD
1 = enable 10Base-T full duplex support;
0 = suppress 10Base-T full duplex support.
1, RO
11
10_Base_T_HD
1 = enable 10Base-T half-duplex support;
0 = suppress 10Base-T half-duplex support.
1, RO
10-6
-
Reserved
-
5
Auto Negotiation
Complete
1 = auto-negotiation process completed;
0 = auto-negotiation process not completed.
0, RO
4
Remote Fault
1 = remote fault condition detected (cleared on read);
0 = no remote fault condition detected.
0, RO
3
Auto Negotiation 1 = Link had not been experienced fail state.
0 = Link had been experienced fail state
1, RD
2
Link Status
1 = valid link established;
0 = no valid link established.
0, RO
1
Jabber Detect
1 = jabber condition detected; 0 = no jabber condition detected.
0, RO
0
Extended
Capability
1 = extended register capability;
0 = basic register capability only.
1, RO
5.20. Auto-negotiation Advertisement Register
(Offset 0066h-0067h, R/W)
This register contains the advertised abilities of this device as they will be transmitted to its link partner
during Auto-negotiation.
Bit
Name
Description/Usage
Default/Attribute
15
NP
Next Page bit.
1 = transmitting the protocol specific data page;
0 = transmitting the primary capability data page
0, RO
14
ACK
1 = acknowledge reception of link partner capability data word.
0, RO
13
RF
1 = advertise remote fault detection capability;
0 = do not advertise remote fault detection capability.
0, RW
12-11
-
Reserved
-
10
Pause
1 = flow control is supported by local node.
0 = flow control is not supported by local mode.
The default value
comes from
EEPROM, RO
9
T4
1 = 100Base-T4 is supported by local node;
0 = 100Base-T4 not supported by local node.
0, RO
8
TXFD
1 = 100Base-TX full duplex is supported by local node;
0 = 100Base-TX full duplex not supported by local node.
1, RW