LAN9313 Datasheet, PDF (180/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
13.1.4.17 1588 Clock Target Low-DWORD Register (1588_CLOCK_TARGET_LO)
Offset:
180h
Size:
32 bits
T h i s r e a d / w r i t e r e g i s t e r c o m b i n e d w i t h 1 5 8 8 C l o c k Ta r g e t H i g h - D W O R D R e g i s t e r
(1588_CLOCK_TARGET_HI) form the 64-bit 1588 Clock Target value. The 1588 Clock Target value is
compared to the current 1588 Clock value and can be used to trigger an interrupt upon at match. Refer
to Chapter 10, "IEEE 1588 Hardware Time Stamp Unit," on page 134 for additional information.
BITS
DESCRIPTION
31:0 Clock Target Low (CLOCK_TARGET_LO)
This field contains the low 32-bits of the 64-bit 1588 Clock Compare value.
TYPE
R/W
DEFAULT
00000000h
Note: Both this register and the 1588 Clock Target High-DWORD Register
(1588_CLOCK_TARGET_HI) must be written for either to be affected.
Revision 1.2 (04-08-08)
180
DATASHEET
SMSC LAN9313/LAN9313i