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VSC8221 데이터시트(PDF) 62 Page - Microsemi Corporation

부품명 VSC8221
상세설명  Single Port 10/100/1000BASE-T PHY with1.25 Gbps SerDes for SFPs/GBICs
PDF  138 Pages
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제조업체  MICROSEMI [Microsemi Corporation]
홈페이지  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

VSC8221 데이터시트(HTML) 62 Page - Microsemi Corporation

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VSC8221
Data Sheet
VMDS-10106 Revision 4.1
December 2006
62 of 62
62
21 PHY OPERATING MODES
The PHY Operating Mode is set according to the value of Mii Register 23.15:12,23.2:1. For more information, see Section 18 on
page 53 and Section 19 on page 57 for details on PHY Operating Mode configuration at startup. The following table summarizes
the PHY operating modes.
Note: For more information about VSC8221 operating modes, see Designing a Copper SFP using the VSC8221 application
note available on the Microsemi Web site.
Table 29. PHY Operating Modes
Operating
Mode
Category
Mii
Register
23.15:12,
23.2:1
CMODE2
[3:0]
MAC
interface
Media
interface
Other Settings
Serial MAC
PHY Oper-
ating Modes
1111, 00
0100
802.3z Ser-
Des
CAT5
Clause 37 disabled
1110, 01
1110
802.3z Ser-
Des
CAT5
Clause 37 enabled
1110, 10
1010
802.3z Ser-
Des
CAT5
Clause 37 enabled, Media Convertor Mode
1110, 00
0000
802.3z Ser-
Des
CAT5
With Clause 37 Auto-Negotiation Detection
1010, 01
1111
SGMii
CAT5
625Mhz SCLK Clock Disabled
1000, 01
0101
SGMii
CAT5
625MHz SCLK Clock Enabled
1001, 00
SGMii
CAT5
Modified Clause 37 auto-negotiation disabled,
625MHz SCLK Clock Enabled
1011, 00
SGMii
CAT5
Modified Clause 37 auto-negotiation disabled,
625MHz SCLK Clock Disabled



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