SMSC LAN9311 User Manual

Page of 460
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
215
Revision 1.4 (08-19-08)
DATASHEET
 
14.2.5.14
1588 Clock Low-DWORD Register (1588_CLOCK_LO)
This read/write register combined with 
 form the
64-bit 1588 Clock value. The 1588 Clock value is used for all 1588 timestamping. The 1588 Clock has
a base frequency of 100MHz, which can be adjusted via the 
 accordingly. Refer to 
 for additional information.
Note:
Both this register and th
 must be
written for either to be affected.
Note:
The value read is the saved value of the 1588 Clock when the 1588_CLOCK_SNAPSHOT bit
in th
 is set.
Offset:
174h
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:0
Clock Low (CLOCK_LO)
This field contains the low 32-bits of the 64-bit 1588 Clock.
R/W
00000000h