dp83820 National Semiconductor Corporation, dp83820 Datasheet - Page 71

• Manufacturer Part Number: dp83820
• Description: 10/100/1000 Mb/s Pci Ethernet Network Interface Controller
• Manufacturer: National Semiconductor Corporation

4.0 Register Set
4.2.42 TBI Auto-Negotiation Expansion Register
This register is a read-only register indicating if a new base page from the link partner has been received and if the local
device is next page able. Writes to this register have no effect.
4.2.43 TBI Extended Status Register
This is a read-only register indicating all modes of operation for the local device. Writes to this register have no effect.
13-0
15-3
bit
15
14
bit
2
1
0
1000BASE-X Half Duplex
1000BASE-X Full Duplex
Next Page Able
Page Received
tag
Offset: 00F0h
Offset: 00F4h
tag
(Continued)
Tag: TANER
Tag: TESR
Local Device supports the
Next Page Function
New Page Received from Link
Partner
Full Duplex 1000BASE-X
Capable
Half Duplex 1000BASE-X
Capable
description
description
Access: Read Only
Access: Read Only
Size: 32 bits
Size: 32 bits
71
unused - returns 0
When set to a 1, this bit indicates that the local device supports the
Next Page function.
When set to a 1, this bit indicates that a new page has been
received from the link partner and stored in the applicable auto-
negotiation link partner ability register or next page register.
unused - returns 0
Read-only bit, set to a 1, indicating that the local device is able
to perform full duplex, 1000BASE-X operations.
Read-only bit, set to a 1, indicating that the local device is able
to perform half duplex, 1000BASE-X operations.
unused - returns 0
Hard Reset: 00000000h
Hard Reset: 0000C000h
Soft Reset: 00000000h
Soft Reset: 0000C000h
usage
usage
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