lan9313 Standard Microsystems Corp., lan9313 Datasheet - Page 136
lan9313
Manufacturer Part Number
lan9313
Description
Lan9313/lan9313i Three Port 10/100 Managed Ethernet Switch With Mii
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9313.pdf
(398 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
lan9313-NZW
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
lan9313-NZW
Manufacturer:
SMSC
Quantity:
20 000
Company:
Part Number:
lan9313I-NZW
Manufacturer:
Standard
Quantity:
261
Company:
Part Number:
lan9313I-NZW
Manufacturer:
Microchip Technology
Quantity:
10 000
Company:
Part Number:
lan9313NZW
Manufacturer:
Standard
Quantity:
295
- Current page: 136 of 398
- Download datasheet (5Mb)
Revision 1.2 (04-08-08)
10.2
IEEE 1588 CLOCK MODE
0
The LAN9313/LAN9313i contains three identical IEEE 1588 Time Stamp blocks as shown in
Figure
64-bit IEEE 1588 clock time upon detection of a Sync or Delay_Req message type on their respective
port. The mode of the clock (master or slave) determines which message is detected on receive and
transmit. For slave clock operation, Sync messages are detected on receive and Delay_Req messages
on transmit. For master clock operation, Delay_Req messages are detected on receive and Sync
messages on transmit. Follow_Up, Delay_Resp and Management packet types do not cause capture.
Each port may be individually configured as an IEEE 1588 master or slave clock via the master/slave
bits (M_nS_1 for Port 1, MnS_2 for Port2, and M_nS_MII for Port 0) in the
(1588_CONFIG).
1588 clock operation.
For ports 1 and 2, receive is defined as data from the PHY (from the outside world) and transmit is
defined as data to the PHY. This is consistent with the point-of-view of where the partner clock resides
(LAN9313/LAN9313i receives packets from the partner via the PHY, etc.). For the time stamp module
connected to the external MII port (Port 0), the definition of transmit and receive is reversed. Receive
is defined as data from the switch fabric, while transmit is defined as data to the switch fabric. This is
consistent with the point-of-view of where the partner clock resides (LAN9313/LAN9313i receives
packets from the partner via the switch fabric, etc.).
As defined by IEEE 1588, and shown in
leading edge of the first data bit following the Start of Frame Delimiter (SFD). However, since the
packet contents are not yet known, the time stamp can not yet be loaded into the capture register.
Therefore, the time stamp is first stored into a temporary internal holding register at the start of every
packet.
IEEE 1588 Time Stamp
Preamble
(M_nS_x = 0)
(M_nS_x = 1)
1
Octet
Master
Slave
0
10.1. These blocks are responsible for capturing the source UUID, sequence ID, and current
1
0
Figure 10.2 IEEE 1588 Message Time Stamp Point
Table 10.1
Table 10.1 IEEE 1588 Message Type Detection
1
0
1
Start of Frame
summarizes the message type detection under slave and master IEEE
Message Timestamp
Delimiter
Ethernet
0
DATASHEET
1
Point
bit time
0
Figure
136
Delay_Req
RECEIVE
1 1 1
Sync
10.2, the message time stamp point is defined as the
0 0 0 0 0 0 0
Three Port 10/100 Managed Ethernet Switch with MII
0 0 0 0 0 0
Start of Frame
First Octet
following
1588 Configuration Register
SMSC LAN9313/LAN9313i
TRANSMIT
Delay_Req
Sync
Datasheet
Related parts for lan9313
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Interface, Integrated USB2.0 Compatible 3-Port Hub
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Lan91c100fd Rev. B Feast Fast Ethernet Controller With Full Duplex Capability
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Feast ? Ast Ethernet Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Com20022i 10 Mbps Arcnet Ansi 878.1 Controller With 2k X 8 On-chip Ram
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Lpc47n207 Lpc Super I/o Irda Hot Docking Chip With Uart Data Brief
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Advanced I/o With X-bus Interface
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Fdc37m707 Enhanced Super I/o Controller With Wake-up Features
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Twenty Pin Uart Tpuart Corporation
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Enhanced Small Device Interface Controller
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Emc1001 1.5?c Smbus Temperature Sensor In Miniature Sot-23
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Beta Compensation And Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Multiple Temperature Sensor With Beta Compensation And Hottest Of Thermal Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Resistance Error Correction & Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet: