DS537 Datasheet, PDF (118/148 Pages) Xilinx, Inc – LogiCORE IP XPS LL TEMAC

LogiCORE IP XPS LL TEMAC (v2.03a)
Table 100: SGMII Management Control Register (Register 0) Bit Definitions (Cont’d)
Bit(s)
Name
Core
Access
Reset
Value
Description
Speed
6 Selection
(MSB)
Returns 1
Always returns 1 for this bit. Along with bit 13, speed selection of 1000 Mb/S
1 is identified.
5
Unidirectional Read/Write
Enable
0
Enable transmit regardless of whether a valid link has been established.
0 - 4 Reserved
Returns 0s
0x0 Always return zeros.
Table 101 shows the Hard TEMAC Internal SGMII PCS Management Status Register bit definitions.
Table 101: SGMII Management Status Register (Register 1) Bit Definitions
Bit(s)
Name
Core Access
Reset
Value
Description
15 ^100BASE-T4
Returns 0
0
Always returns a 0 for this bit because 100BASE-T4 is not
supported.
14
100BASE-X Full
Duplex
Returns 0
0
Always returns a 0 for this bit because 100BASE-X full duplex is
not supported.
13
100BASE-X Half
Duplex
Returns 0
0
Always returns a 0 for this bit because 100BASE-X half duplex
is not supported.
10 Mb/S
12 _{Full Duplex}
Returns 0
Always returns a 0 for this bit because 10 Mb/S full duplex is not
0
supported.
11
10 Mb/S
Half Duplex
Returns 0
0
Always returns a 0 for this bit because 10 Mb/S half duplex is not
supported.
10
100BASE-T2 Full
Duplex
Returns 0
0
Always returns a 0 for this bit because 100BASE-T2 full duplex
is not supported.
9
100BASE-T2 Half
Duplex
Returns 0
0
Always returns a 0 for this bit because 100BASE-T2 half duplex
is not supported.
8 ^{Extended Status}
Returns 1
1
Always returns a 1 for this bit indicating the presence of the
extended register (register 15).
7 Unidirectional Ability Returns 1
1 Always returns a 1.
6
MF Preamble
Suppression
Returns 1
1
Always returns a 1 for this bit to indicate the support of
management frame preamble suppression.
Auto Negotiation
5 _Complete
Read
0 - auto negotiation process not completed
0
1 - auto negotiation process complete
4 ^{Remote Fault}
Read only self
clearing on read
0
0 - no remote fault condition detected
1 - remote fault condition detected
3
Auto Negotiation
Ability
Returns 1
1
Always returns a q for this bit indicating that the PHY is capable
of auto negotiation.
2 ^{Link Status}
Read only self
clearing on read
0
0 - PHY Link is down
1 - PHY Link is up
1 ^{Jabber Detect}
Returns 0
0
Always returns a 0 for this bit because no jabber detect is
supported.
0 ^{Extended Capability Returns 0}
0
Always returns a 0 for this bit because no extended register set
is supported.
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