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VSC8540RT 数据表(PDF) 40 Page - Microchip Technology

部件名 VSC8540RT
功能描述  Radiation-Tolerant Single Port Fast Ethernet Copper PHY with RGMII/MII/RMII Interfaces
PDF  87 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

VSC8540RT 数据表(HTML) 40 Page - Microchip Technology

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VSC8540RT
DS60001603E-page 40
2022 Microchip Technology Inc. and its subsidiaries
6.2.5
LINK PARTNER AUTO-NEGOTIATION CAPABILITY
The bits in main register 5 can be used to determine if the Cat5 link partner (LP) used with the VSC8540RT device is
compatible with the auto-negotiation functionality.
6.2.6
AUTO-NEGOTIATION EXPANSION
The bits in main register 6 work together with those in register 5 to indicate the status of the LP auto-negotiation func-
tioning. The following table shows the available settings and readouts.
6.2.7
TRANSMIT AUTO-NEGOTIATION NEXT PAGE
The settings in register 7 in the main registers space provide information about the number of pages in an auto-negoti-
ation sequence. The following table shows the settings available.
TABLE 6-8:
AUTO-NEGOTIATION LINK PARTNER ABILITY, ADDRESS 5 (0X05)
Bit
Name
Access
Description
Default
15
LP next page transmission request RO
1: Requested
0
14
LP acknowledge
RO
1: Acknowledge
0
13
LP remote fault
RO
1: Remote fault
0
12
Reserved
RO
Reserved
11
LP advertise asymmetric pause
RO
1: Capable of asymmetric pause
0
10
LP advertise symmetric pause
RO
1: Capable of symmetric pause
0
9
LP advertise 100BASE-T4
RO
1: Capable of 100BASE-T4
0
8
LP advertise 100BASE-TX FDX
RO
1: Capable of 100BASE-TX FDX 0
7
LP advertise 100BASE-TX HDX
RO
1: Capable of 100BASE-TX HDX 0
6
LP advertise 10BASE-T FDX
RO
1: Capable of 10BASE-T FDX
0
5
LP advertise 10BASE-T HDX
RO
1: Capable of 10BASE-T HDX
0
4:0 LP advertise selector
RO
00000
TABLE 6-9:
AUTO-NEGOTIATION EXPANSION, ADDRESS 6 (0X06)
Bit
Name
Access
Description
Default
15:5 Reserved
RO
Reserved.
4
Parallel detection fault
RO
This bit latches high.
1: Parallel detection fault.
0
3
LP next page capable
RO
1: LP is next page capable.
0
2
Local PHY next page capable RO
1: Local PHY is next page capable.
1
1
Page received
RO
This bit latches high.
1: New page is received.
0
0
LP is auto-negotiation capa-
ble
RO
1: LP is capable of auto-negotiation. 0
TABLE 6-10:
AUTO-NEGOTIATION NEXT PAGE TRANSMIT, ADDRESS 7 (0X07)
Bit
Name
Access
Description
Default
15
Next page
R/W
1: More pages follow.
0
14
Reserved
RO
Reserved.
13
Message page
R/W
1: Message page.
0: Unformatted page.
1
12
Acknowledge 2
R/W
1: Complies with request.
0: Cannot comply with request.
0
11
Toggle
RO
1: Previous transmitted LCW = 0.
0: Previous transmitted LCW = 1.
0
10:0 Message/unformatted code R/W
00000000001



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