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144 www.xilinx.com Ethernet 1000BASE-X PCS/PMA or SGMII v9.1
UG155 March 24, 2008
Chapter 9: Configuration and Status
R
Register 16: SGMII Auto-Negotiation Interrupt Control
MDIO Register 16: SGMII Auto-Negotiation Interrupt Control
Table 9-28: SGMII Auto-Negotiation Interrupt Control (Register 16)
Bit(s) Name Description Attributes Default Value
16.15:2 Reserved Always return 0s returns 0s 00000000000000
16.1 Interrupt
Status
1 = Interrupt is asserted
0 = Interrupt is not asserted
If the interrupt is enabled, this bit is
asserted on completion of an Auto-
Negotiation cycle across the SGMII
link; it is only cleared by writing ‘0’
to this bit.
If the Interrupt is disabled, the bit is
set to ‘0.’
NOTE: The an_interrupt port of the
core is wired to this bit.
read/
write
0
16.0 Interrupt
Enable
1 = Interrupt enabled
0 = Interrupt disabled
read/
write
1
15 0
Reg 16
RESERVED
12
INTERRUPT STATUS
INTERRUPT ENABLE