lan9311 Standard Microsystems Corp., lan9311 Datasheet - Page 202

• Manufacturer Part Number: lan9311
• Description: Lan9311/lan9311i Two Port 10/100 Managed Ethernet Switch With 16-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

Revision 1.2 (04-08-08)
14.2.5
14.2.5.1
BITS
31:0
Timestamp High (TS_HI)
This field contains the high 32-bits of the timestamp taken on the receipt of
a 1588 Sync or Delay_Req packet.
IEEE 1588
This section details the IEEE 1588 timestamp related registers. Each port of the LAN9311/LAN9311i
has a 1588 timestamp block with 8 related registers, 4 for transmit capture and 4 for receive capture.
These sets of registers are identical in functionality for each port, and thus their register descriptions
have been consolidated. In these cases, the register names will be amended with a lowercase “x” in
place of the port designation. The wildcard “x” should be replaced with “1”, “2”, or “MII” for the Port 1,
Port 2, and Port 0(Host MAC) respectively. A list of all the 1588 related registers can be seen in
Table
Stamp Unit," on page
Port x 1588 Clock High-DWORD Receive Capture Register (1588_CLOCK_HI_RX_CAPTURE_x)
Note: The selection between Sync or Delay_Req packets is based on the corresponding
Note: There are multiple instantiations of this register, one for each port of the LAN9311/LAN9311i.
Note: For Port 0(Host MAC), receive is defined as data from the switch fabric, while transmit is to
14.1. For more information on the IEEE 1588, refer to
master/slave bit in the
Refer to
the switch fabric.
Offset:
Section 14.2.5
155.
Port 1: 100h
Port 2: 120h
Port 0: 140h
DESCRIPTION
1588 Configuration Register
for additional information.
DATASHEET
202
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Size:
(1588_CONFIG).
Chapter 11, "IEEE 1588 Hardware Time
32 bits
TYPE
RO
SMSC LAN9311/LAN9311i
00000000h
DEFAULT
Datasheet