DP83820BVUW National Semiconductor, DP83820BVUW Datasheet - Page 70

• Manufacturer Part Number: DP83820BVUW
• Description: IC INTERFACE CONTROLLER 208-PQFP
• Manufacturer: National Semiconductor

Specifications of DP83820BVUW

• Controller Type: Ethernet Controller, MAC/BIU
• Interface: IEEE 802.3
• Voltage - Supply: 3.3V
• Current - Supply: 150mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 208-MQFP, 208-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DP83820BVUW

4.0 Register Set
4.2.41 TBI Auto-Negotiation Link Partner Ability Register
This register contains the advertised ability of the link partner. The bit definitions are a direct representation of the link
partner’s base page. The value of this register is valid after successful completion of auto-negotiation or when a new
base page has be received as indicated by bit 6 of the Auto-Negotiation Expansion Register.
13-12
13-12
11-9
11-9
8-7
4-0
8-7
4-0
bit
15
14
6
5
6
5
HALF_DUP
FULL_DUP
PS2, PS1
RF2,RF1
HALF_DUP
tag
NP
FULL_DUP
RF2, RF1
PS2, PS1
Offset: 00ECh
(Continued)
Next Page Exchange
Required
Tag: TANLPAR
description
Remote Fault
Pause Capability Encoding PS1 indicates that the device is capable of providing symmetric
Half Duplex
Full Duplex
Read-only. Indicates that the link partner has a next page to transmit.
ignore on read - internal use only
Read-only. Indicates remote fault status of the link partner.
unused - returns 0
Read-only. Indicates the PAUSE capability of the link partner.
Read-only. Link partner is half duplex capable.
Read-only. Link partner is full duplex capable
unused - returns 0
Access: Read Only
Size: 32 bits
Read-only bits indicating that a fault or error condition has occurred.
The default value is 00.
00 - No error, Link OK
10 - Offline
01 - Link Failure
11 - Auto-Negotiation Error
unused - returns 0
PAUSE functions. PS2 indicates that asymmetric PAUSE operation is
supported. The value of PS1 when PS2 is set indicates the direction
PAUSE frames are supported for flow across the link. Asymmetric
PAUSE configuration results in independent enabling of the PAUSE
receive and PAUSE transmit functions for PAUSE configuration
resolution.
00 - No PAUSE
10 - Asymmetric PAUSE Toward Link Partner
01 - Symmetric PAUSE
11 - Both Symmetric PAUSE and Asymmetric PAUSE Toward Local
Device.
When set to 1, advertises half duplex capability.
When set to 1, advertises full duplex capability.
unused - returns 0
70
usage
Hard Reset: 00000000h
Soft Reset: 00000000h
www.national.com