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VSC8221 датащи(PDF) 98 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) 98 Page - Microsemi Corporation

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VSC8221
Data Sheet
VMDS-10106 Revision 4.1
December 2006
98 of 106
106
23.2.32 Register 31 (1Fh) – Extended Page Access
31.15:1 – Reserved
31.0 - Extended Page Access
in order to provide additional functionality beyond the iEEE802.3 specified 32 Mii registers, the VSC8221 contains an extended
register set which supports an additional 15 registers. When bit 31.0 is set to a “1”, Mii registers 16:30 will access the extended
set of registers. The state of bit 31.0 has no effect on Mii registers 0:15.
23.3 Extended Mii Registers
23.3.1 Register 16E (10h) - Reserved
16E.15:0 – Reserved
23.3.2 Register 17E (11h) - Serdes Control Register
Register 31 (1Fh) – Extended Page Access1
1 This register will always read zero.
Bit
Name
Access
States
Reset Value
Sticky
15:1
Reserved
RO
00000000 0000000
0
Extended Page Access R/W
1 = Mii registers 16:30 will access extended
register set
0 = Mii registers 16:30 will access standard
register set
0
Register 16E (10h) – Reserved
Bit
Name
Access
States
Reset Value
Sticky
15:0
Reserved
RO
00000000 00000000
Register 17E (11h) – SerDes Control Register
Bit
Name
Access
States
Reset Value
Sticky
15:5
Reserved
RO
00000000 000
4:2
RDP/RDN SCLKP/SCLKN
Output Swing Control
R/W
000=0.4mv(p-p)
001=0.6mv(p-p)
010=0.8mv(p-p)
011=1.0mv(p-p)
100=1.2mv(p-p)
101=1.4mv(p-p)
110/111=1.6mv(p-p)
100
1
25mv Hysteresis Disable
R/W
1=Disable
0=Enable
0
0
CLKOUTMiCRO Enable
R/W
1=Enable
0=Disable
1



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