network_status (GEM) Register

Zynq UltraScale+ Devices Register Reference (UG1087)

Document ID
UG1087
Release Date
2024-03-13
Revision
1.10

network_status (GEM) Register Description

Register Namenetwork_status
Offset Address0x0000000008
Absolute Address 0x00FF0B0008 (GEM0)
0x00FF0C0008 (GEM1)
0x00FF0D0008 (GEM2)
0x00FF0E0008 (GEM3)
Width32
TyperoRead-only
Reset Value0x00000004
DescriptionThe network status register returns status information with respect to the PHY management interface.

network_status (GEM) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
Reserved31:8roRead-only0x0Reserved, read as zero, ignored on write.
lpi_indicate_pclk 7roRead-only0x0LPI Indication - Low power idle has been detected on receive. This bit is set when LPI is detected and reset when normal idle is detected. An interrupt is generated when the state of this bit changes.
pfc_negotiate_pclk 6roRead-only0x0Set when PFC Priority Based Pause has been negotiated.
mac_pause_tx_en 5roRead-only0x0PCS auto-negotiation pause transmit resolution.
mac_pause_rx_en 4roRead-only0x0PCS auto-negotiation pause receive resolution
mac_full_duplex 3roRead-only0x0PCS auto-negotiation duplex resolution. Set to one if the resolution function determines that both devices are capable of full duplex operation. If zero half-duplex operation is possible as long as bit 0 (PCS link state) is also one.
man_done 2roRead-only0x1The PHY management logic is idle (i.e. has completed).
mdio_in 1roRead-only0x0Returns status of the mdio_in pin.
pcs_link_state 0roRead-only0x0Returns status of PCS link state. If auto-negotiation is disabled this returns the synchronisation status. If auto-negotiation is enabled it is set in the LINK_OK state as long as a compatible duplex mode is resolved, it is always set in the LINK_OK state in SGMII mode.