lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 214
lan9312
Manufacturer Part Number
lan9312
Description
Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9312.pdf
(458 pages)
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Revision 1.2 (04-08-08)
14.2.5.14
BITS
31:0
Clock Low (CLOCK_LO)
This field contains the low 32-bits of the 64-bit 1588 Clock.
1588 Clock Low-DWORD Register (1588_CLOCK_LO)
This read/write register combined with
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
(1588_CLOCK_ADDEND)
on page 154
Note: Both this register and the
Note: The value read is the saved value of the 1588 Clock when the 1588_CLOCK_SNAPSHOT bit
written for either to be affected.
in the
Offset:
for additional information.
1588 Command Register (1588_CMD)
174h
accordingly. Refer to
DESCRIPTION
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
DATASHEET
1588 Clock High-DWORD Register (1588_CLOCK_HI)
1588 Clock High-DWORD Register (1588_CLOCK_HI)
214
Size:
Chapter 11, "IEEE 1588 Hardware Time Stamp Unit,"
is set.
32 bits
1588 Clock Addend Register
TYPE
R/W
SMSC LAN9312
00000000h
DEFAULT
Datasheet
must be
form the
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