LAN9313 Datasheet, PDF (178/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
13.1.4.15 1588 Clock Addend Register (1588_CLOCK_ADDEND)
Offset:
178h
Size:
32 bits
This read/write register is responsible for adjusting the 64-bit 1588 Clock frequency. Refer to
Chapter 10, "IEEE 1588 Hardware Time Stamp Unit," on page 134 for details on how to properly use
this register.
BITS
DESCRIPTION
31:0 Clock Addend (CLOCK_ADDEND)
This 32-bit value is added to the 1588 frequency divisor accumulator every
cycle. This allows the base 100MHz frequency of the 64-bit 1588 Clock to
be adjusted accordingly.
TYPE
R/W
DEFAULT
00000000h
Revision 1.2 (04-08-08)
178
DATASHEET
SMSC LAN9313/LAN9313i