LAN9311 Datasheet, PDF (207/461 Pages) SMSC Corporation – Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

14.2.5.6
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
Port x 1588 Clock Low-DWORD Transmit Capture Register (1588_CLOCK_LO_TX_CAPTURE_x)
Offset:
Port 1: 114h
Port 2: 134h
Port 0: 154h
Size:
32 bits
BITS
31:0
DESCRIPTION
Timestamp Low (TS_LO)
This field contains the low 32-bits of the timestamp taken on the
transmission of a 1588 Sync or Delay_Req packet.
TYPE
RO
DEFAULT
00000000h
Note: The selection between Sync or Delay_Req packets is based on the corresponding
master/slave bit in the 1588 Configuration Register (1588_CONFIG).
Note: There are multiple instantiations of this register, one for each port of the LAN9311/LAN9311i.
Refer to Section 14.2.5 for additional information.
Note: For Port 0(Host MAC), receive is defined as data from the switch fabric, while transmit is to
the switch fabric.
SMSC LAN9311/LAN9311i
207
DATASHEET
Revision 2.0 (02-14-13)