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VSC8221 датащи(PDF) 81 Page - Microsemi Corporation

номер детали VSC8221
подробное описание детали  Single Port 10/100/1000BASE-T PHY with1.25 Gbps SerDes for SFPs/GBICs
PDF  138 Pages
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производитель  MICROSEMI [Microsemi Corporation]
домашняя страница  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

VSC8221 датащи(HTML) 81 Page - Microsemi Corporation

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VSC8221
Data Sheet
VMDS-10106 Revision 4.1
December 2006
81 of 106
106
15.14 – 1000BASE-X HDX Capability
The VSC8221 is not 1000BASE-X capable, so this bit is hard-wired to “0”.
15.13 – 1000BASE-T FDX Capability
The VSC8221 is 1000BASE-T FDX capable, so this bit is hard-wired to “1”.
15.12 – 1000BASE-T HDX Capability
The VSC8221 is 1000BASE-T HDX capable, so this bit is hard-wired to “1”.
15.11:0 – Reserved
23.2.17 Register 16 (10h) – Reserved
16.15:0 – Reserved
23.2.18 Register 17 (11h) – Reserved
17.15:0 – Reserved
23.2.19 Register 18 (12h) – Bypass Control Register
Register 16 (10h) – Reserved Register
Bit
Name
Access
States
Reset Value
Sticky
15:0
Reserved
RO
00000000 00000000
Register 17 (11h) – Reserved Register
Bit
Name
Access
States
Reset Value
Sticky
15:0
Reserved
RO
00000000 00000000
Register 18 (12h) – Bypass Control Register
Bit
Name
Access
States
Reset
Value
Sticky
15
Reserved
RO
0
14
Bypass 4B5B Encoder/Decoder
R/W
1 = Bypass 4B5B encoder/decoder
0 = Enable 4B5B encoder/decoder
0
13
Bypass Scrambler
R/W
1 = Bypass scrambler
0 = Enable scrambler
0
12
Bypass Descrambler
R/W
1 = Bypass descrambler
0 = Enable descrambler
0
11:9
Reserved
RO
000
8
Transmitter Test Clock Enable
R/W
1 = Enable internal TXCLK test output on CLK-
OUTMiCRO pin
0 = Disable internal TXCLK test output on CLK-
OUTMiCRO pin
0



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